def _ydot_scratch(self, n_indent, of):
# Assign scratch variables
if self.use_cse:
for si in self.ydot_out_scratch:
siname = si[0]
sivalue = self.fortranify(
sympy.fcode(si[1],
precision=15,
source_format='free',
standard=95))
of.write('{}{} = {}\n'.format(self.indent * n_indent, siname,
sivalue))
def _ydot(self, n_indent, of):
# Write YDOT
for i, n in enumerate(self.unique_nuclei):
sol_value = self.fortranify(
sympy.fcode(self.ydot_out_result[i],
precision=15,
source_format='free',
standard=95))
of.write('{}{}(j{}) = ( &\n'.format(self.indent * n_indent,
self.name_ydot_nuc, n))
of.write("{}{} &\n".format(self.indent * (n_indent + 1),
sol_value))
of.write("{} )\n\n".format(self.indent * n_indent))
def _set_axis_and_point(self, cond_eq: sympy.Equality, coords: cs.CoordinateSystem):
coord_vars = coords.axises()
self.axis, self.axis_point = None, None
U = sympy.Function("u")
u_entrances = list(cond_eq.find(U))
if len(u_entrances) != 1:
raise ValueError(
"Cannot contain different args in U for derivative and u function"
)
a1 = sympy.Wild("a1", properties=[lambda x: x.is_constant])
a2 = sympy.Wild("a2", properties=[lambda x: x.is_constant])
u_pow = sympy.Wild("u_pow", properties=[lambda x: x.is_constant])
axis = sympy.Wild("axis", properties=[lambda x: x.is_symbol])
U_pattern = sympy.WildFunction("U_pattern", nargs=len(coords.axises()))
res = cond_eq.lhs.match(
a1 * U_pattern ** u_pow + a2 * sympy.Derivative(U_pattern, axis)
)
if res is None:
raise ValueError(f"Cannot parse {cond_eq}")
self.a1 = res[a1]
self.a2 = res[a2]
u_with_args = res[U_pattern]
if self.a1 != 0 and self.a2 == 0:
self.kind = ConditionKind.First.name
elif self.a1 == 0 and self.a2 != 0:
self.kind = ConditionKind.Second.name
elif self.a1 != 0 and self.a2 != 0:
self.kind = ConditionKind.Third.name
else:
raise ValueError(
f"Left side of boundary condition: {cond_eq} does"
"not contain u function"
)
for i, arg in enumerate(u_with_args.args):
if arg.is_constant():
self.axis = coord_vars[i]
self.axis_point = sympy.fcode(arg.evalf())
self._axis_point = arg
break
if self.axis is None:
raise ValueError(
"Bondary condition cannot be parsed"
"Probably you did not specified U arguments or"
"there is no constant in arguments"
)
def _get_partial_pressure_code(self, str_list, str_trans):
# Calculate flowrate of all gas species
flowratecode = []
flowrate = 0
for species in self._species:
if isinstance(species, _Fluid):
flowrate += species.symbol
fcode = sym.fcode(flowrate, source_format='free')
for key in str_list:
fcode = fcode.replace(key, str_trans[key])
flowratecode.append(f' flowrate = {fcode}')
return flowratecode
def writeCode_Fortran95(self, outname):
## Write Fortran-95 Solver Subroutine
try:
fo = open(outname, 'w')
except:
raise
indent = ' '*2
fo.write('module gauss_jordan_module\n')
fo.write('{}implicit none\n'.format(indent))
fo.write('\n')
fo.write('contains\n')
fo.write('\n')
fo.write('{}subroutine gauss_jordan_solve(A, x, b)\n'.format(indent))
fo.write('{}double precision, dimension({},{}), intent(in) :: A\n'.format(
indent*2, self.nvars, self.nvars))
fo.write('{}double precision, dimension({}), intent(out) :: x\n'.format(
indent*2, self.nvars))
fo.write('{}double precision, dimension({}), intent(in) :: b\n'.format(
indent*2, self.nvars))
if self.cse_rep:
for rep in self.cse_rep:
fo.write('{}double precision :: {}\n'.format(indent*2, rep[0]))
fo.write('\n')
for rep in self.cse_rep:
rep_value = self.fortranify(sympy.fcode(rep[1], precision = 15,
source_format = 'free',
standard = 95))
fo.write('{}{} = {}\n'.format(indent*2, rep[0], rep_value))
fo.write('\n')
for i, sol in enumerate(self.solution):
sol_value = self.fortranify(sympy.fcode(sol, precision = 15,
source_format = 'free',
standard = 95))
fo.write('{}x({}) = {}\n'.format(indent*2, i+1, sol_value))
fo.write('{}end subroutine gauss_jordan_solve\n'.format(indent))
fo.write('end module gauss_jordan_module\n')
fo.close()
def _jacnuc(self, n_indent, of):
# now make the JACOBIAN
n_unique_nuclei = len(self.unique_nuclei)
for jnj, nj in enumerate(self.unique_nuclei):
for ini, ni in enumerate(self.unique_nuclei):
jac_idx = n_unique_nuclei * jnj + ini
jvalue = self.fortranify(
sympy.fcode(self.jac_out_result[jac_idx],
precision=15,
source_format='free',
standard=95))
of.write("{}{}(j{},j{}) = ( &\n".format(
self.indent * n_indent, self.name_jacobian_nuc, nj, ni))
of.write("{}{} &\n".format(self.indent * (n_indent + 1),
jvalue))
of.write("{} )\n\n".format(self.indent * n_indent))
def _jacnuc(self, n_indent, of):
# now make the Jacobian
n_unique_nuclei = len(self.unique_nuclei)
for jnj, nj in enumerate(self.unique_nuclei):
for ini, ni in enumerate(self.unique_nuclei):
jac_idx = n_unique_nuclei*jnj + ini
if not self.jac_null_entries[jac_idx]:
jvalue = self.fortranify(sympy.fcode(self.jac_out_result[jac_idx],
precision=15,
source_format='free',
standard=95))
of.write("{}scratch = (&\n".format(self.indent*(n_indent)))
of.write("{}{} &\n".format(self.indent*(n_indent+1), jvalue))
of.write("{} )\n".format(self.indent*n_indent))
of.write("{}call set_jac_entry({}, j{}, j{}, scratch)\n\n".format(
self.indent*n_indent, self.name_jacobian, nj, ni))
def expressionToCode(expression, language):
'''Converts a SymPy Expression to a line of code in the target language'''
if (language == "python"):
return sympy.pycode(expression)
elif (language == "javascript" or language == "typescript"):
return sympy.jscode(expression)
elif (language == "c"):
return sympy.ccode(expression)
elif (language == "cpp"):
return sympy.cxxcode(expression)
elif (language == "r"):
return sympy.rcode(expression)
elif (language == "fortran"):
return sympy.fcode(expression)
elif (language == "mathematica"):
return sympy.mathematica_code(expression)
elif (language == "matlab" or language == "octave"):
return sympy.octave_code(expression)
elif (language == "rust"):
return sympy.rust_code(expression)
def camb_fortran(expr, name='camb_function', frame='CDM', expand=False):
"""
Convert symbolic expression to CAMB fortran code, using CAMB variable notation.
This is not completely general, but it will handle conversion of Newtonian gauge
variables like Psi_N, and most derivatives up to second order.
:param expr: symbolic sympy expression using camb.symbolic variables and functions (plus any
standard general functions that CAMB can convert to fortran).
:param name: lhs variable string to assign result to
:param frame: frame in which to interret non gauge-invariant expressions.
By default uses CDM frame (synchronous gauge), as used natively by CAMB.
:param expand: do a sympy expand before generating code
:return: fortran code snippet
"""
camb_diff_vars = 'etakdot qgdot qrdot vbdot pigdot pirdot pinudot ' + \
'octg octgdot polterdot polterddot diff_rhopi sigmadot phidot ' + \
'ddvisibility dvisibility dopacity ddopacity'
camb_arr_vars = 'Edot E'
tau = _camb_cache.setdefault('tau', Symbol('tau'))
etakdot, qgdot, qrdot, vbdot, pigdot, pirdot, pinudot, octg, octgdot, \
polterdot, polterddot, diff_rhopi, sigmadot, phidot, \
ddvisibility, dvisibility, dopacity, ddopacity = \
define_variables(camb_diff_vars, _camb_cache)
Edot, E = \
sympy.symbols(camb_arr_vars, cls=sympy.IndexedBase, shape=(sympy.oo,))
# Keep everything except baryons pressure which is very small
camb_diff_subs = [(diff(q_g, t), qgdot), (diff(pi_g, t), pigdot),
(diff(pi_r, t), pirdot), (diff(q_r, t), qrdot),
(diff(v_b, t), vbdot),
(diff(visibility, t, t), ddvisibility),
(diff(visibility, t), dvisibility),
(diff(opacity, t, t), ddopacity),
(diff(opacity, t), dopacity), (diff(J_3, t), octgdot),
(diff(E_2, t), Edot[2]), (diff(E_3, t), Edot[3]),
(diff(pi_nu, t), pinudot),
(diff(eta, t), -2 * etakdot / k),
(diff(Pi, t), diff_rhopi / kappa / a**2),
(diff(polter, t, t), polterddot),
(diff(polter, t), polterdot), (diff(sigma, t), sigmadot),
(diff(phi, t), phidot), (diff(p_b, t), 0)]
if frame != 'CDM':
expr = make_frame_invariant(expr, frame)
# substitute for variables not available in CAMB function
expr = cdm_gauge(
subs(Newt_vars + synchronous_vars + [hdot_sub, z_sub],
expr)).doit().simplify()
res = cdm_gauge(
subs(background_eqs + total_eqs, expr).subs(camb_diff_subs))
if 'Derivative' in str(res):
raise Exception(
'Unknown derivatives, generally can only handle up to second.\nRemaining derivatives: '
+ str(res))
res = cdm_gauge(subs([K_sub, hdot_sub, z_sub], res))
camb_var_subs = []
for var in res.atoms(Function):
camb_var = getattr(var, 'camb_var', None)
if camb_var:
if isinstance(camb_var, (list, tuple)):
for x in camb_var:
define_variable(x)
camb_sub = getattr(var, 'camb_sub', None)
if not camb_sub:
raise Exception(
'must have camb_sub if camb_var has more than one variable'
)
else:
camb_var = define_variable(camb_var)
camb_sub = getattr(var, 'camb_sub', None) or camb_var
if camb_sub:
if isinstance(camb_sub, six.string_types):
camb_sub = eval(camb_sub)
camb_var_subs.append((var, camb_sub))
camb_subs = camb_var_subs + [(p_b, 0), (E_2, E[2]), (E_3, E[3]),
(J_3, octg), (K_fac, Kf[1])]
res = res.subs(camb_subs).simplify()
no_arg_funcs = [
f for f in res.atoms(Function) if f.args[0] == t and not f is f_K
]
res = res.subs(
zip(no_arg_funcs, [Symbol(str(x.func)) for x in no_arg_funcs]))
res = res.subs(t, tau)
if expand: res = res.expand()
res = res.collect([
Symbol(str(x.func)) for x in
[k, sigma, opacity, visibility, dopacity, dvisibility, ddvisibility]
])
res = sympy.fcode(res,
source_format='free',
standard=95,
assign_to=name,
contract=False)
import textwrap
if not 'if ' in res:
lines = res.split('\n')
for i, line in enumerate(lines):
if '=' in line:
res = '\n'.join(lines[i:])
break
res = ''.join([x.strip() for x in res.split('&')])
res = ' &\n '.join(textwrap.wrap(res))
return res
def FORTRAN_jacobian(x, jac, parameters=[]):
# TODO document
# TODO remove this function if unused in paper
NX = len(x)
NP = len(parameters)
Nrowpd = jac.shape[0]
Ncolpd = jac.shape[1]
if NX != Nrowpd != Ncolpd:
raise Exception("System is not square!")
_X = sy.tensor.IndexedBase("X", shape=(NX, ))
X = [_X[i + 1] for i in xrange(NX)]
X = X + [_X[NX + i + 1] for i in xrange(NP)]
if type(jac) == sy.Matrix: jac = sy.Matrix(jac)
jac_sub = jac.subs(zip(list(x) + list(parameters), X))
ijs = [i for i in it.product(xrange(Nrowpd), xrange(Ncolpd))]
# generate FORTRAN code
fstrs = [sy.fcode(jac_ij) for jac_ij in jac_sub]
# remove whitespace and newlines
fstrs = ["".join(jac_ij.split()) for jac_ij in fstrs]
# remove all @ (FORTRAN line continuation indicator)
fstrs = [jac_ij.replace("@", "") for jac_ij in fstrs]
# find FORTRAN inline merge statements and replace with a hidden "switch"
# variable whose value is set by a full IF statement at the start of the
# function call.
# -- this is needed because FORTRAN77 doesn't support inline merge statements
Hstrs = [] # to hold hidden switch expressions
for i in xrange(len(fstrs)):
while fstrs[i].find("merge") != -1:
H = "H(" + str(len(Hstrs) + 1) + ")"
i_merge_start, i_merge_end, Hstr = parse_merge(H, fstrs[i])
fstrs[i] = fstrs[i][:i_merge_start] + H + fstrs[i][i_merge_end:]
Hstrs.append(Hstr)
NH = len(Hstrs)
# format the fstrs
wrapper = textwrap.TextWrapper(expand_tabs=True,
replace_whitespace=True,
initial_indent=" ",
subsequent_indent=" @ ",
width=60)
for k in xrange(len(fstrs)):
i, j = ijs[k]
fstrs[k] = wrapper.fill("pd(" + str(i + 1) + "," + str(j + 1) + ")=" +
fstrs[k]) + "\n"
# put the above elements together into a FORTRAN subroutine
hdr = " subroutine jac_f77(neq, t, X, ml, mu, pd, nrowpd) \n" +\
"Cf2py intent(hide) neq, ml, mu, nrowpd \n" +\
"Cf2py intent(out) pd \n" +\
" integer neq, ml, mu, nrowpd \n" +\
" double precision t, X, pd \n" +\
" dimension X(neq), pd(neq, neq) \n"
if NH > 0: hdr += " real, dimension(" + str(NH) + ") :: H \n"
H_block = "".join(Hstrs)
pd_block = "".join(fstrs)
fcode = hdr + H_block + pd_block + " return \n" + " end \n"
return fcode
def _to_fcode(expr):
return sympy.fcode(sympy.simplify(expr).evalf()).replace("\n", "").replace("@", "")
def sympy_to_muparser(expr):
code = sympy.fcode(expr)
code = code.replace('\n @', '')
code = code.replace('**', '^')
return code
def f90code(r, l):
f90sym, f90fun, f90cod = fcode(r.evalf(6), l, source_format = 'free', \
standard = 2008, human = False)
return f90cod
def main(argv):
# Define arguments applicable to all commands
from argparse import ArgumentParser, RawDescriptionHelpFormatter, SUPPRESS
p = ArgumentParser(description=__doc__,
formatter_class=RawDescriptionHelpFormatter)
p.add_argument('-v', '--verbosity', action='count',
help='increase verbosity; may be supplied repeatedly')
p.add_argument('-n', '--newline', action='store_const', dest='statements',
const=statements_by_newline,
default=statements_by_semicolon,
help='expect newline-delimited input with "#" comments;'
' otherwise semicolons delimit with "//" comments')
p.add_argument('-d', '--decl', action='append', default=[],
help='file containing SymPy-based declarations defaulting'
' to standard input when declarations required')
# Control C vs Fortran vs SymPy (default) output for expressions
g = p.add_mutually_exclusive_group()
g.add_argument('-c', '--ccode', dest='style', default=str,
help='output symbolic expressions as C code',
action='store_const',
const=lambda expr: sympy.ccode(expr, human=False)[2])
g.add_argument('-f', '--fcode', dest='style', default=SUPPRESS,
help='output symbolic expressions as Fortran code',
action='store_const',
const=lambda expr: sympy.fcode(expr,
source_format='free',
human=False)[2])
# Control order of the approximation to any used expectations
g = p.add_mutually_exclusive_group()
g.add_argument('-1', dest='order', action='store_const', const=1,
help='employ 1st order approximation to the expectation')
g.add_argument('-2', dest='order', action='store_const', const=2,
help='employ 2nd order approximation to the expectation')
p.set_defaults(order=2)
# Add command-specific subparsers
sp = p.add_subparsers(title='subcommands, each possibly using declarations',
metavar='')
sp_chk = sp.add_parser('chk', help='run verification sanity checks',
description='run verification sanity checks')
sp_dec = sp.add_parser('dec', help='output known declarations',
description='output known declarations')
sp_lib = sp.add_parser('lib', help='list undefined symbols in declarations',
description=prerequisites.__doc__,
formatter_class=RawDescriptionHelpFormatter)
sp_pre = sp.add_parser('pre', help='list prerequisites for E[f(x)], Var[f(x)]',
description=prerequisites.__doc__,
formatter_class=RawDescriptionHelpFormatter)
sp_exp = sp.add_parser('exp', help='tabulate terms in E[f(x)]',
description=expectation.__doc__,
formatter_class=RawDescriptionHelpFormatter)
sp_var = sp.add_parser('var', help='tabulate terms in Var[f(x)]',
description=variance.__doc__,
formatter_class=RawDescriptionHelpFormatter)
# Some of the subparsers take one or more symbols to process
f_help = 'quantities of interest; if empty, process all declarations'
sp_dec.add_argument('f', nargs='*', help=f_help)
sp_lib.add_argument('f', nargs='*', help=f_help)
sp_pre.add_argument('f', nargs='*', help=f_help)
sp_exp.add_argument('f', nargs='*', help=f_help)
sp_var.add_argument('f', nargs='*', help=f_help)
# Each command dispatches to one of the following methods
sp_chk.set_defaults(command=command_chk)
sp_dec.set_defaults(command=command_dec)
sp_lib.set_defaults(command=command_lib)
sp_pre.set_defaults(command=command_pre)
sp_exp.set_defaults(command=command_exp)
sp_var.set_defaults(command=command_var)
# Parse the incoming command line
args = p.parse_args()
# Supply "all known declarations" behavior for any f arguments first
# parsing any requested files into one unified dictionary "args.syms".
# Additionally, provide nicer error messages on unknown symbols
# (otherwise a messy stacktrace appears and folks doubt the code).
if ('f' in args):
args.syms = parser(args.statements(args.decl))
if not args.f:
args.f = args.syms.keys()
else:
unknown = filter(lambda k: k not in args.syms, args.f)
if unknown:
raise LookupError("Requested but not in declarations: %s"
% ', '.join(unknown))
# Dispatch to the chosen command
retval = args.command(args)
# Warn if the results are likely bogus due to an older SymPy version
if ( distutils.version.LooseVersion(sympy.__version__)
< distutils.version.LooseVersion('0.7.2') ):
print('WARN: %s notes SymPy %s older than minimum 0.7.2'
% (argv[0], sympy.__version__),
file=sys.stderr)
return retval
def camb_fortran(expr, name='camb_function', frame='CDM', expand=False):
"""
Convert symbolic expression to CAMB fortran code, using CAMB variable notation.
This is not completely general, but it will handle conversion of Newtonian gauge
variables like Psi_N, and most derivatives up to second order.
:param expr: symbolic sympy expression using camb.symbolic variables and functions (plus any
standard general functions that CAMB can convert to fortran).
:param name: lhs variable string to assign result to
:param frame: frame in which to interret non gauge-invariant expressions.
By default uses CDM frame (synchronous gauge), as used natively by CAMB.
:param expand: do a sympy expand before generating code
:return: fortran code snippet
"""
camb_diff_vars = 'etakdot qgdot qrdot vbdot pigdot pirdot pinudot ' + \
'octg octgdot polterdot polterddot diff_rhopi sigmadot phidot ' + \
'ddvisibility dvisibility dopacity ddopacity'
camb_arr_vars = 'Edot E'
tau = _camb_cache.setdefault('tau', Symbol('tau'))
etakdot, qgdot, qrdot, vbdot, pigdot, pirdot, pinudot, octg, octgdot, \
polterdot, polterddot, diff_rhopi, sigmadot, phidot, \
ddvisibility, dvisibility, dopacity, ddopacity = \
define_variables(camb_diff_vars, _camb_cache)
Edot, E = \
sympy.symbols(camb_arr_vars, cls=sympy.IndexedBase, shape=(sympy.oo,))
# Keep everything except baryons pressure which is very small
camb_diff_subs = [(diff(q_g, t), qgdot), (diff(pi_g, t), pigdot), (diff(pi_r, t), pirdot),
(diff(q_r, t), qrdot), (diff(v_b, t), vbdot),
(diff(visibility, t, t), ddvisibility), (diff(visibility, t), dvisibility),
(diff(opacity, t, t), ddopacity), (diff(opacity, t), dopacity),
(diff(J_3, t), octgdot), (diff(E_2, t), Edot[2]),
(diff(E_3, t), Edot[3]), (diff(pi_nu, t), pinudot),
(diff(eta, t), -2 * etakdot / k), (diff(Pi, t), diff_rhopi / kappa / a ** 2),
(diff(polter, t, t), polterddot), (diff(polter, t), polterdot),
(diff(sigma, t), sigmadot), (diff(phi, t), phidot), (diff(p_b, t), 0)]
if frame != 'CDM':
expr = make_frame_invariant(expr, frame)
# substitute for variables not available in CAMB function
expr = cdm_gauge(subs(Newt_vars + synchronous_vars + [hdot_sub, z_sub], expr)).doit().simplify()
res = cdm_gauge(subs(background_eqs + total_eqs, expr).subs(camb_diff_subs))
if 'Derivative' in str(res):
raise Exception(
'Unknown derivatives, generally can only handle up to second.\nRemaining derivatives: ' + str(res))
res = cdm_gauge(subs([K_sub, hdot_sub, z_sub], res))
camb_var_subs = []
for var in res.atoms(Function):
camb_var = getattr(var, 'camb_var', None)
if camb_var:
if isinstance(camb_var, (list, tuple)):
for x in camb_var:
define_variable(x)
camb_sub = getattr(var, 'camb_sub', None)
if not camb_sub:
raise Exception('must have camb_sub if camb_var has more than one variable')
else:
camb_var = define_variable(camb_var)
camb_sub = getattr(var, 'camb_sub', None) or camb_var
if camb_sub:
if isinstance(camb_sub, six.string_types): camb_sub = eval(camb_sub)
camb_var_subs.append((var, camb_sub))
camb_subs = camb_var_subs + [(p_b, 0), (E_2, E[2]), (E_3, E[3]), (J_3, octg), (K_fac, Kf[1])]
res = res.subs(camb_subs).simplify()
no_arg_funcs = [f for f in res.atoms(Function) if f.args[0] == t and not f is f_K]
res = res.subs(zip(no_arg_funcs, [Symbol(str(x.func)) for x in no_arg_funcs]))
res = res.subs(t, tau)
if expand: res = res.expand()
res = res.collect([Symbol(str(x.func)) for x in
[k, sigma, opacity, visibility, dopacity, dvisibility, ddvisibility]])
res = sympy.fcode(res, source_format='free', standard=95, assign_to=name, contract=False)
import textwrap
if not 'if ' in res:
lines = res.split('\n')
for i, line in enumerate(lines):
if '=' in line:
res = '\n'.join(lines[i:])
break
res = ''.join([x.strip() for x in res.split('&')])
res = ' &\n '.join(textwrap.wrap(res))
return res
def FORTRAN_f(x, f, parameters=[], verbose=False):
"""
Produce FORTRAN function for evaluating a vector-valued SymPy expression f
given a state vector x.
The FORTRAN function will have the signature f_f77(neq, t, X, Y) where neq
is hidden and Y is an output matrix.
"""
# TODO remove code for dealing with stochastic systems -- it is not used in
# this paper
x = list(x) + list(parameters)
f = list(f) + [0] * len(parameters)
rv = list(
set((np.concatenate([sy.stats.random_symbols(f_i) for f_i in f]))))
NR = len(rv)
if NR > 0:
x += [sy.symbols("dt"), sy.symbols("seed")]
f += [0, 0]
NX = len(x)
NY = len(f)
if NX != NY:
raise Exception("System is not square!")
if verbose: print "generating FORTRAN matrices..."
_X = sy.tensor.IndexedBase("X", shape=(NX, ))
X = [_X[i + 1] for i in xrange(NX)]
_R = sy.tensor.IndexedBase("R", shape=(NR, ))
R = [_R[i + 1] for i in xrange(NR)]
if type(f) != sy.Matrix: f = sy.Matrix(f)
# WARNING : These substitution steps are VERY SLOW!!! It might be wise to
# parallelise them in the future, or at least substitute into one dynamical
# equation at a time so that progress can be monitored.
if verbose:
print "substituting matrix elements for original state variables and parameters (WARNING: SLOW)..."
f_sub = f.subs(zip(x, X))
if verbose:
print "substituting matrix elements for random variables (WARNING: SLOW)..."
f_sub = f_sub.subs(zip(rv, R))
# generate FORTRAN code
if verbose: print "generating FORTRAN code from dynamics equations..."
fstrs = [sy.fcode(fi, standard=95) for fi in f_sub]
# remove whitespace and newlines
if verbose: print "removing whitespace and newlines..."
fstrs = ["".join(fi.split()) for fi in fstrs]
# remove all @ (FORTRAN line continuation indicator)
if verbose: print "removing line continuations..."
fstrs = [fi.replace("@", "") for fi in fstrs]
# find FORTRAN inline merge statements and replace with a hidden "switch"
# variable whose value is set by a full IF statement at the start of the
# function call.
# -- this is needed because FORTRAN77 doesn't support inline merge statements
Hstrs = [] # to hold hidden switch expressions
if verbose: print "formatting piecewise functions..."
for i in xrange(len(fstrs)):
while fstrs[i].find("merge") != -1:
H = "H(" + str(len(Hstrs) + 1) + ")"
i_merge_start, i_merge_end, Hstr = parse_merge(H, fstrs[i])
fstrs[i] = fstrs[i][:i_merge_start] + H + fstrs[i][i_merge_end:]
Hstrs.append(Hstr)
NH = len(Hstrs)
# format the fstrs
wrapper = textwrap.TextWrapper(expand_tabs=True,
replace_whitespace=True,
initial_indent=" ",
subsequent_indent=" @ ",
width=60)
if verbose: print "formatting state equations..."
for i in xrange(len(fstrs)):
fstrs[i] = wrapper.fill("Y(" + str(i + 1) + ")=" + fstrs[i]) + "\n"
# put the above elements together into a FORTRAN subroutine
if verbose: print "formatting preamble..."
hdr = " subroutine f_f77(neq, t, X, Y) \n" +\
"Cf2py intent(hide) neq \n" +\
"Cf2py intent(out) Y \n" +\
" integer neq \n" +\
" double precision t, X, Y \n" +\
" dimension X(neq), Y(neq) \n"
if NH > 0: hdr += " real, dimension(" + str(NH) + ") :: H \n"
# TODO fix the following -- assumes dt = 0.01
# NOTE this is only important when dealing with stochastic systems
if NR > 0: hdr += " real, dimension(" + str(NR) + ") :: R \n" +\
" integer :: SEED \n" +\
" real :: RTRASH \n" +\
" SEED = INT((t/" + sy.fcode(X[-2]).strip() +\
") + " + sy.fcode(X[-1]).strip() + ") \n" +\
" CALL SRAND(SEED) \n" +\
" DO i=1,4 \n" +\
" RTRASH=RAND(0) \n" +\
" END DO \n"
R_block = "".join([sy.fcode(R_i) + "=RAND(0) \n" for R_i in R])
H_block = "".join(Hstrs)
Y_block = "".join(fstrs)
if verbose: print "assembling source code blocks..."
fcode = hdr + R_block + H_block + Y_block + " return \n" + " end \n"
# final formatting
if verbose: print "final source code formatting..."
wrapper = textwrap.TextWrapper(expand_tabs=True,
replace_whitespace=True,
initial_indent="",
subsequent_indent=" @ ",
width=60)
fcode = "".join([wrapper.fill(src) + "\n" for src in fcode.split("\n")])
return fcode
def setup_execs(self):
from micki.fortran2 import f90_template, pyf_template
from numpy import f2py
# y_vec is an array symbol that will represent the species
# concentrations provided by the differential equation solver inside
# the Fortran code (that is, y_vec is an INPUT to the functions that
# calculate the residual, Jacobian, and rate)
y_vec = sym.IndexedBase('y', shape=(self.nvariables, ))
vac_vec = sym.IndexedBase('vac', shape=(len(self.vacancy), ))
# Map y_vec elements (1-indexed, of course) onto 'modelparam' symbols
trans = {self.symbols[i]: y_vec[i + 1] for i in range(self.nvariables)}
trans.update(
{vac.symbol: y_vec[i + 1]
for i, vac in enumerate(self.vacancy)})
# Map string represntation of 'modelparam' symbols onto string
# representation of y-vec elements
str_trans = {}
for i, symbol in enumerate(self.symbols):
str_trans[sym.fcode(symbol, source_format='free')] = \
sym.fcode(y_vec[i + 1], source_format='free')
for i, vac in enumerate(self.vacancy):
str_trans[sym.fcode(vac.symbol, source_format='free')] = \
sym.fcode(vac_vec[i + 1], source_format='free')
str_list = [key for key in str_trans]
str_list.sort(key=len, reverse=True)
# these will contain lists of strings, with each element being one
# Fortran assignment for the master equation, Jacobian, and
# rate expressions
dypdrcode = []
drdycode = []
vaccode = []
drdvaccode = []
dvacdycode = []
for i, expr in enumerate(self.vac_sym):
fcode = sym.fcode(expr, source_format='free')
for key in str_list:
fcode = fcode.replace(key, str_trans[key])
vaccode.append(' vac({}) = '.format(i + 1) + fcode)
for i, row in enumerate(self.drdvac):
for j, elem in enumerate(row):
if elem != 0:
fcode = sym.fcode(elem, source_format='free')
for key in str_list:
fcode = fcode.replace(key, str_trans[key])
drdvaccode.append(
' drdvac({}, {}) = '.format(i + 1, j + 1) + fcode)
for i, row in enumerate(self.dvacdy):
for j, elem in enumerate(row):
if elem != 0:
dvacdycode.append(
' dvacdy({}, {}) = '.format(i + 1, j + 1) +
sym.fcode(elem, source_format='free'))
for i, row in enumerate(self.dypdr):
for j, elem in enumerate(row):
if elem != 0:
dypdrcode.append(
' dypdr({}, {}) = '.format(i + 1, j + 1) +
sym.fcode(elem, source_format='free'))
# Effectively the same as above, except on the two-dimensional Jacobian
# matrix.
for i, row in enumerate(self.drdy):
for j, elem in enumerate(row):
if elem != 0:
fcode = sym.fcode(elem, source_format='free')
for key in str_list:
fcode = fcode.replace(key, str_trans[key])
drdycode.append(' drdy({}, {}) = '.format(i + 1, j + 1) +
fcode)
ratecode = self._get_rate_code(str_list, str_trans)
#flowratecode = self._get_flowrate_code(str_list, str_trans)
is_gas = [' isgas = 0']
for idx, species in enumerate(self._variable_species):
if isinstance(species, _Fluid):
is_gas.append(f' isgas({idx+1}) = 1')
else:
is_gas.append(f' isgas({idx+1}) = 0')
# We insert all of the parameters of this differential equation into
# the prewritten Fortran template, including the residual, Jacobian,
# and rate expressions we just calculated.
program = f90_template.format(
neq=self.nvariables,
nx=1,
nrates=len(self.rates),
nvac=len(self.vacancy),
dypdrcalc='\n'.join(dypdrcode),
drdycalc='\n'.join(drdycode),
ratecalc='\n'.join(ratecode),
vaccalc='\n'.join(vaccode),
drdvaccalc='\n'.join(drdvaccode),
dvacdycalc='\n'.join(dvacdycode),
isgas='\n'.join(is_gas),
)
# Generate a randomly-named temp directory for compiling the module.
# We will name the actual module file after the directory.
dname = tempfile.mkdtemp()
modname = os.path.split(dname)[1]
fname = modname + '.f90'
pyfname = modname + '.pyf'
# For debugging purposes, write out the generated module
with open('solve_ida.f90', 'w') as f:
f.write(program)
# Write the pertinent data into the temp directory
with open(os.path.join(dname, pyfname), 'w') as f:
f.write(
pyf_template.format(modname=modname,
neq=self.nvariables,
nrates=len(self.rates),
nvac=len(self.vacancy)))
# Compile the module with f2py
lapack = "-lmkl_rt"
if "MICKI_LAPACK" in os.environ:
lapack = os.environ["MICKI_LAPACK"]
os.environ["CFLAGS"] = "-w"
f2py.compile(program,
modulename=modname,
extra_args='--quiet '
'--f90flags="-Wno-unused-dummy-argument '
'-Wno-unused-variable -Wno-unused-func -w" '
'-lsundials_fida '
'-lsundials_fnvecserial '
'-lsundials_ida '
'-lsundials_fsunlinsollapackdense '
'-lsundials_sunlinsollapackdense '
'-lsundials_nvecserial ' + lapack + ' ' +
os.path.join(dname, pyfname),
source_fn=os.path.join(dname, fname),
verbose=0)
# Delete the temporary directory
shutil.rmtree(dname)
# Import the module on-the-fly with __import__. This is kind of a hack.
solve_ida = __import__(modname)
self._solve_ida = solve_ida
# The Fortran module's initialize, solve, and finalize routines
# are mapped onto finitialize, fsolve, and ffinalize inside the Model
# object. We don't want users touching these manually
self.finitialize = solve_ida.initialize
self.ffind_steady_state = solve_ida.find_steady_state
self.fsolve = solve_ida.solve
self.ffinalize = solve_ida.finalize
# Delete the module file. We've already imported it, so it's in memory.
modulefile = glob.glob(f'{modname}*.so')[0]
os.remove(modulefile)
for i in range(3):
eqstream.append(Eq(yvar[i], sympy_exp(logY[i].subs(f, ff(r)))))
temp = Symbol('logR')
r12, r23 = symbols('r12 r23', real=True, positive=True)
f12, f23 = symbols('f12 f23', real=True, negative=False)
# przejscie 1->2
eq = nsimplify(logY_all[1][0]) - 3 * nsimplify(logY_all[1][1]) - sympy_log(
(2 * cgs_stef * cgs_mhydr) / (3 * cgs_boltz * cgs_c))
for x in solveset(eq.replace(sympy_log(r), temp), temp):
eqstream.append(Eq(r12, sympy_exp(x.subs(f, ff(r12)))))
# przejscie 2->3
eq = nsimplify(
logY_all[1][0]) - Rational(7, 2) * nsimplify(logY_all[1][1]) - sympy_log(
kappa_es / kappa_abs_0)
for x in solveset(eq.replace(sympy_log(r), temp), temp):
eqstream.append(Eq(r23, sympy_exp(x.subs(f, ff(r23)))))
with open('3zones.f90', 'w') as f:
for eq in eqstream:
f.write(
fcode(eq.rhs.evalf(6),
eq.lhs,
standard=2008,
source_format='free',
contract=False,
user_functions={'f': 'f'}) + "\n")
if signu is 'fixed':
ei.signu = '%f_wp' % (0.5 * proxy.std())
print(ei.signu)
ei.nextra_para = 2
else:
ei.signu = 'para(self%nA+self%nF+2)'
ei.nextra_para = 2
x = sympy.symbols(
['para({:d})'.format(i + 1) for i in range(ei.nA + ei.nF)],
positive=True)
a0, aplus = ei.para_trans(x, dtype=object)
mat_str = lambda *x: ' {}({}, {}) = {}'.format(*x)
A0str = [
mat_str('A', i + 1, j + 1, sympy.fcode(value, source_format='free'))
for (i, j), value in np.ndenumerate(a0) if value > 0
]
Apstr = [
mat_str('F', i + 1, j + 1, sympy.fcode(value, source_format='free'))
for (i, j), value in np.ndenumerate(aplus) if value > 0
]
varfile = open('svar.f90', 'r').read()
varfile = varfile.format(assign_para='\n'.join(A0str + Apstr), **vars(ei))
other_files = {
'data.txt': data['1993':'2007-06'][model['yy']].values,
'proxy.txt': proxy.values,
'priordraws.txt': priorsim[:args.nsim].T,
'phistar.txt': phihatT.flatten(order='F'),
def setup_execs(self):
from micki.fortran import f90_template, pyf_template
from numpy import f2py
# y_vec is an array symbol that will represent the species
# concentrations provided by the differential equation solver inside
# the Fortran code (that is, y_vec is an INPUT to the functions that
# calculate the residual, Jacobian, and rate)
y_vec = sym.IndexedBase('yin', shape=(self.nvariables, ))
# Map y_vec elements (1-indexed, of course) onto 'modelparam' symbols
trans = {self.symbols[i]: y_vec[i + 1] for i in range(self.nvariables)}
# Map string represntation of 'modelparam' symbols onto string
# representation of y-vec elements
str_trans = {}
for i in range(self.nvariables):
str_trans[sym.fcode(self.symbols[i], source_format='free')] = \
sym.fcode(y_vec[i + 1], source_format='free')
str_list = [key for key in str_trans]
str_list.sort(key=len, reverse=True)
# these will contain lists of strings, with each element being one
# Fortran assignment for the master equation, Jacobian, and
# rate expressions
rescode = []
jaccode = []
ratecode = []
# Convert symbolic master equation into a valid Fortran string
for i in range(self.nvariables):
fcode = sym.fcode(self.f_sym[i], source_format='free')
# Replace modelparam symbols with their y_vec counterpart
for key in str_list:
fcode = fcode.replace(key, str_trans[key])
# Create actual line of code for calculating residual
rescode.append(' res({}) = '.format(i + 1) + fcode)
# Effectively the same as above, except on the two-dimensional Jacobian
# matrix.
for i in range(self.nvariables):
for j in range(self.nvariables):
expr = self.jac_sym[j, i]
# Unlike the residual, some elements of the Jacobian can be 0.
# We don't need to bother writing 'jac(x,y) = 0' a hundred
# times in Fortran, so we omit those.
if expr != 0:
fcode = sym.fcode(expr, source_format='free')
for key in str_list:
fcode = fcode.replace(key, str_trans[key])
jaccode.append(' jac({}, {}) = '.format(j + 1, i + 1) +
fcode)
# See residual above
for i, rate in enumerate(self.rates):
fcode = sym.fcode(rate, source_format='free')
for key in str_list:
fcode = fcode.replace(key, str_trans[key])
ratecode.append(' rates({}) = '.format(i + 1) + fcode)
# We insert all of the parameters of this differential equation into
# the prewritten Fortran template, including the residual, Jacobian,
# and rate expressions we just calculated.
program = f90_template.format(neq=self.nvariables,
nx=1,
nrates=len(self.rates),
rescalc='\n'.join(rescode),
jaccalc='\n'.join(jaccode),
ratecalc='\n'.join(ratecode))
# Generate a randomly-named temp directory for compiling the module.
# We will name the actual module file after the directory.
dname = tempfile.mkdtemp()
modname = os.path.split(dname)[1]
fname = modname + '.f90'
pyfname = modname + '.pyf'
# For debugging purposes, write out the generated module
with open('solve_ida.f90', 'w') as f:
f.write(program)
# Write the pertinent data into the temp directory
with open(os.path.join(dname, pyfname), 'w') as f:
f.write(
pyf_template.format(modname=modname,
neq=self.nvariables,
nrates=len(self.rates)))
# Compile the module with f2py
f2py.compile(program,
modulename=modname,
extra_args='--quiet '
'--f90flags="-Wno-unused-dummy-argument '
'-Wno-unused-variable -w -fopenmp" '
'-lsundials_fcvode '
'-lsundials_cvode -lsundials_fnvecopenmp '
'-lsundials_nvecopenmp -lopenblas_openmp -lgomp ' +
os.path.join(dname, pyfname),
source_fn=os.path.join(dname, fname),
verbose=0)
# Delete the temporary directory
shutil.rmtree(dname)
# Import the module on-the-fly with __import__. This is kind of a hack.
solve_ida = __import__(modname)
# The Fortran module's initialize, solve, and finalize routines
# are mapped onto finitialize, fsolve, and ffinalize inside the Model
# object. We don't want users touching these manually
self.finitialize = solve_ida.initialize
self.ffind_steady_state = solve_ida.find_steady_state
self.fsolve = solve_ida.solve
self.ffinalize = solve_ida.finalize
# Delete the module file. We've already imported it, so it's in memory.
os.remove(modname + '.so')
# + [markdown] {"slideshow": {"slide_type": "slide"}}
# ## Code printers
# The most basic form of code generation are the code printers. They convert SymPy expressions into over a dozen target languages.
#
# + {"slideshow": {"slide_type": "fragment"}}
x = symbols('x')
expr = abs(sin(x**2))
expr
# + {"slideshow": {"slide_type": "fragment"}}
sym.ccode(expr)
# + {"slideshow": {"slide_type": "fragment"}}
sym.fcode(expr, standard=2003, source_format='free')
# + {"slideshow": {"slide_type": "fragment"}}
from sympy.printing.cxxcode import cxxcode
cxxcode(expr)
# + {"slideshow": {"slide_type": "slide"}}
sym.tanh(x).rewrite(sym.exp)
# + {"slideshow": {"slide_type": "fragment"}}
from sympy import sqrt, exp, pi
expr = 1/sqrt(2*pi*sigma**2)* exp(-(x-mu)**2/(2*sigma**2))
print(sym.fcode(expr, standard=2003, source_format='free'))
# + [markdown] {"slideshow": {"slide_type": "slide"}}
# ## Creating a function from a symbolic expression
def dalton_functional_printer(kernel,
routinename,
input_variables,
output_variables,
shortrange=False,
description=["No description.\n"],
diff_order=[1],
diff_idx=[[0]],
output_files=[]):
"""
shortrange = True, if mu is an input parameter
diff_order, is a list that indicatices how many of of each derivative that is present
diff_order[0] = Energy, diff_order[1] = number of first derivatives
diff_idx, is a list of lists that containts the idx of the given derivatives.
"""
if len(diff_order) != len(diff_idx):
print("ERROR: order of derivatives does not match number of idx lists")
for i in range(0, len(diff_order)):
if diff_order[i] != len(diff_idx[i]):
print(
"ERROR: Number of " + i +
"'th derivatives does not match lenght of corrosponding idx list"
)
# Format kernel expression
#kernel = kernel.evalf() # evalf is super slow!
E_cse = cse(kernel, optimizations="basic")
E_clean = []
E_clean_temp = []
for i in range(len(E_cse[0])):
E_clean.append((E_cse[0][i][0], E_cse[0][i][1].evalf()))
for i in range(len(E_cse[1])):
E_clean_temp.append(E_cse[1][i].evalf())
E_clean = (E_clean, E_clean_temp)
string_list = []
subroutine_input = ", ".join(input_variables)
if shortrange == True:
subroutine_input += ", mu"
subroutine_input += ", " + ", ".join(
output_variables[0:int(len(output_variables) / 4)])
string_list.append(
"C*****************************************************************************\n"
)
string_list.append("pure subroutine " + routinename + "(" +
subroutine_input + ")\n")
string_list.append(
"C*****************************************************************************\n"
)
for i in description:
string_list.append("C " + i)
string_list.append("C\nC Subroutine generated using Sympy " +
str(sympy.__version__) + "\n")
string_list.append("C Generated: " +
datetime.datetime.now().strftime("%B %d, %Y") + "\n")
string_list.append(
"C*****************************************************************************\n"
)
string_list.append("implicit none\n")
string_list.append("real*8, intent(in) :: " + ", ".join(input_variables))
if shortrange == True:
string_list[-1] += ", mu"
string_list[-1] += "\n"
string_list.append(
"real*8, intent(out) :: " +
", ".join(output_variables[0:int(len(output_variables) / 4)]) + "\n")
if "d1Ea" in output_variables:
string_list[-1] = string_list[-1].replace("d1Ea", "d1Ea(4)")
else:
string_list[-1] = string_list[-1].replace("d1E", "d1E(9)")
if "d2Ea" in output_variables:
string_list[-1] = string_list[-1].replace("d2Ea", "d2Ea(10)")
else:
string_list[-1] = string_list[-1].replace("d2E", "d2E(45)")
string_list.append(
"real*8 :: PBE_value, PBE_alpha_value, PBE_beta_value\n")
if len(E_clean[0]) > 0:
string_list.append("real*8 :: ")
for term in E_clean[0]:
for letter in str(
fcode(term[0],
source_format="free").replace('&\n ', "")):
string_list[-1] += letter
if term != E_clean[0][-1]:
string_list[-1] += ", "
string_list[-1] += "\n"
if len(diff_order) / 4 >= 1 and "Ea" in output_variables:
string_list.append("Ea = 0.0d0\n")
elif len(diff_order) / 4 >= 1:
string_list.append("E = 0.0d0\n")
if len(diff_order) / 4 >= 2 and "d1Ea" in output_variables:
string_list.append("d1Ea(:) = 0.0d0\n")
elif len(diff_order) / 4 >= 2:
string_list.append("d1E(:) = 0.0d0\n")
if len(diff_order) / 4 >= 3 and "d2Ea" in output_variables:
string_list.append("d2Ea(:) = 0.0d0\n")
elif len(diff_order) / 4 >= 3:
string_list.append("d2E(:) = 0.0d0\n")
for term in E_clean[0]:
string_list.append(str(term[0]) + " = ")
for letter in str(
fcode(term[1],
source_format="free").replace('&\n ', "").replace(
"parameter (pi = 3.1415926535897932d0)\n", "")):
string_list[-1] += letter
string_list[-1] += "\n"
output_counter = 0
diff_counter = 0
term_counter = 0
for term in E_clean[1]:
if term_counter < 3:
if term_counter == 0:
string_list.append("PBE_value = ")
elif term_counter == 2:
string_list.append("PBE_alpha_value = ")
elif term_counter == 1:
string_list.append("PBE_beta_value = ")
for letter in str(
fcode(term, source_format="free").replace(
'&\n ',
"").replace("parameter (pi = 3.1415926535897932d0)\n",
"")):
string_list[-1] += letter
string_list[-1] += "\n"
term_counter += 1
else:
# divide by four because of 4 different cases
if len(diff_order) / 4 - len(diff_order) / 4 == diff_counter:
string_list.append(
"if ((PBE_alpha_value .ge. PBE_value) .and. (PBE_beta_value .ge. PBE_value)) then\n"
)
elif len(diff_order) / 4 * 2 - len(diff_order) / 4 == diff_counter:
string_list.append("end if\n")
string_list.append(
"if ((PBE_alpha_value .ge. PBE_value) .and. (PBE_beta_value .lt. PBE_value)) then\n"
)
elif len(diff_order) / 4 * 3 - len(diff_order) / 4 == diff_counter:
string_list.append("end if\n")
string_list.append(
"if ((PBE_alpha_value .lt. PBE_value) .and. (PBE_beta_value .ge. PBE_value)) then\n"
)
elif len(diff_order) / 4 * 4 - len(diff_order) / 4 == diff_counter:
string_list.append("end if\n")
string_list.append(
"if ((PBE_alpha_value .lt. PBE_value) .and. (PBE_beta_value .lt. PBE_value)) then\n"
)
if diff_idx[diff_counter][output_counter] == 0:
string_list.append(output_variables[0] + " = ")
else:
string_list.append(
output_variables[diff_counter] + "(" +
str(diff_idx[diff_counter][output_counter]) + ") = ")
for letter in str(
fcode(term, source_format="free").replace(
'&\n ',
"").replace("parameter (pi = 3.1415926535897932d0)\n",
"")):
string_list[-1] += letter
string_list[-1] += "\n"
output_counter += 1
if diff_order[diff_counter] == output_counter:
output_counter = 0
diff_counter += 1
string_list.append("end if\n")
string_list.append("end subroutine")
for output_file in output_files:
print_function(string_list, output_file)
def setup_execs(self):
from micki.fortran import f90_template, pyf_template
from numpy import f2py
# y_vec is an array symbol that will represent the species
# concentrations provided by the differential equation solver inside
# the Fortran code (that is, y_vec is an INPUT to the functions that
# calculate the residual, Jacobian, and rate)
y_vec = sym.IndexedBase('yin', shape=(self.nvariables,))
# Map y_vec elements (1-indexed, of course) onto 'modelparam' symbols
trans = {self.symbols[i]: y_vec[i + 1] for i in range(self.nvariables)}
# Map string represntation of 'modelparam' symbols onto string
# representation of y-vec elements
str_trans = {}
for i in range(self.nvariables):
str_trans[sym.fcode(self.symbols[i], source_format='free')] = \
sym.fcode(y_vec[i + 1], source_format='free')
str_list = [key for key in str_trans]
str_list.sort(key=len, reverse=True)
# these will contain lists of strings, with each element being one
# Fortran assignment for the master equation, Jacobian, and
# rate expressions
rescode = []
jaccode = []
ratecode = []
# Convert symbolic master equation into a valid Fortran string
for i in range(self.nvariables):
fcode = sym.fcode(self.f_sym[i], source_format='free')
# Replace modelparam symbols with their y_vec counterpart
for key in str_list:
fcode = fcode.replace(key, str_trans[key])
# Create actual line of code for calculating residual
rescode.append(' res({}) = '.format(i + 1) + fcode)
# Effectively the same as above, except on the two-dimensional Jacobian
# matrix.
for i in range(self.nvariables):
for j in range(self.nvariables):
expr = self.jac_sym[j, i]
# Unlike the residual, some elements of the Jacobian can be 0.
# We don't need to bother writing 'jac(x,y) = 0' a hundred
# times in Fortran, so we omit those.
if expr != 0:
fcode = sym.fcode(expr, source_format='free')
for key in str_list:
fcode = fcode.replace(key, str_trans[key])
jaccode.append(' jac({}, {}) = '.format(j + 1, i + 1) +
fcode)
# See residual above
for i, rate in enumerate(self.rates):
fcode = sym.fcode(rate, source_format='free')
for key in str_list:
fcode = fcode.replace(key, str_trans[key])
ratecode.append(' rates({}) = '.format(i + 1) + fcode)
# We insert all of the parameters of this differential equation into
# the prewritten Fortran template, including the residual, Jacobian,
# and rate expressions we just calculated.
program = f90_template.format(neq=self.nvariables, nx=1,
nrates=len(self.rates),
rescalc='\n'.join(rescode),
jaccalc='\n'.join(jaccode),
ratecalc='\n'.join(ratecode))
# Generate a randomly-named temp directory for compiling the module.
# We will name the actual module file after the directory.
dname = tempfile.mkdtemp()
modname = os.path.split(dname)[1]
fname = modname + '.f90'
pyfname = modname + '.pyf'
# For debugging purposes, write out the generated module
with open('solve_ida.f90', 'w') as f:
f.write(program)
# Write the pertinent data into the temp directory
with open(os.path.join(dname, pyfname), 'w') as f:
f.write(pyf_template.format(modname=modname, neq=self.nvariables,
nrates=len(self.rates)))
# Compile the module with f2py
f2py.compile(program, modulename=modname,
extra_args='--quiet '
'--f90flags="-Wno-unused-dummy-argument '
'-Wno-unused-variable -w -fopenmp" '
'-lsundials_fcvode '
'-lsundials_cvode -lsundials_fnvecopenmp '
'-lsundials_nvecopenmp -lopenblas_openmp -lgomp ' +
os.path.join(dname, pyfname),
source_fn=os.path.join(dname, fname), verbose=0)
# Delete the temporary directory
shutil.rmtree(dname)
# Import the module on-the-fly with __import__. This is kind of a hack.
solve_ida = __import__(modname)
# The Fortran module's initialize, solve, and finalize routines
# are mapped onto finitialize, fsolve, and ffinalize inside the Model
# object. We don't want users touching these manually
self.finitialize = solve_ida.initialize
self.ffind_steady_state = solve_ida.find_steady_state
self.fsolve = solve_ida.solve
self.ffinalize = solve_ida.finalize
# Delete the module file. We've already imported it, so it's in memory.
os.remove(modname + '.so')
def sympy_to_muparser(expr):
code = sympy.fcode(expr)
code = code.replace('\n @', '')
code = code.replace('**', '^')
return code
modules=_lambdify_modules)
_ufns = {'argmax': 'argmax'}
#pylint: disable=unnecessary-lambda
_code_printers = {
'c':
lambda expr, **kw: sp.ccode(
expr, standard='c99', user_functions=_ufns, **kw),
'cxx':
lambda expr, **kw: sp.cxxcode(expr, user_functions=_ufns, **kw),
'rust':
lambda expr, **kw: sp.rust_code(expr, user_functions=_ufns, **kw),
'fortran':
lambda expr, **kw: sp.fcode(expr, standard=95, user_functions=_ufns, **kw),
'js':
lambda expr, **kw: sp.jscode(expr, user_functions=_ufns, **kw),
'r':
lambda expr, **kw: sp.rcode(expr, user_functions=_ufns, **kw),
'julia':
lambda expr, **kw: sp.julia_code(expr, user_functions=_ufns, **kw),
'mathematica':
lambda expr, assign_to=None, **kw: sp.mathematica_code(
expr, user_functions=_ufns, **kw),
'octave':
lambda expr, **kw: sp.octave_code(expr, user_functions=_ufns, **kw),
}
def to_code(syexpr, dialect, assign_to='y', **kw):
