def move_point(p, x, unpack=True):
"""Adds a number to each of the coordinates of a point.
parameters:
`p`: the point to be moved.
`x`: the amount the point should be moved.
"""
tdump = TextDumper()
tdump.dump(p, "p", ['S', 'Point'])
tdump.dump(x, "x", ['R', '8'])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.move_point_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.move_point_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def scale_array(v, s, unpack=True):
"""scale a one dimentional array.
parameters:
`v`: the array to be scaled.
`s`: the scalar factor.
"""
tdump = TextDumper()
tdump.dump(v, "v", ['T', ['R', '8']])
tdump.dump(s, "s", ['R', '8'])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.scale_array_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.scale_array_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def cube(x, unpack=True):
"""cube a number
parameters:
`x`: number to be cubed.
"""
tdump = TextDumper()
tdump.dump(x, "x", ['I', '4'])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.cube_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.cube_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def print_msg(msg, unpack=True):
"""Print a message to the standard error stream.
parameters:
`msg`: the message to be printed.
"""
tdump = TextDumper()
tdump.dump(msg, "msg", ['W'])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.print_msg_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.print_msg_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def make_line(p1, p2, unpack=True):
"""Given two points, it constructs a line.
parameters:
`p1`: the first point.
`p2`: the second point.
"""
tdump = TextDumper()
tdump.dump(p1, "p1", ['S', 'Point'])
tdump.dump(p2, "p2", ['S', 'Point'])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.make_line_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.make_line_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def scale(v, alpha, unpack=True):
"""Scalar multiplication.
parameters:
`v`: the vector to multiply.
`alpha`: the scalar.
"""
tdump = TextDumper()
tdump.dump(v, "v", ['T', ['R', '8']])
tdump.dump(alpha, "alpha", ['R', '8'])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.scale_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.scale_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def test_rep(unpack=True):
"""This function will do useless computation for the sake of
testing the reporter object which will print messages to
stdout.
"""
tdump = TextDumper()
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.test_rep_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.test_rep_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def timestwo(x, unpack=True):
"""Take a scalar and double it.
parameters:
`x`: scalar to be doubled.
"""
tdump = TextDumper()
tdump.dump(x, "x", ['R', '8'])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.timestwo_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.timestwo_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def square_root(x, x0, iter, unpack=True):
"""Compute the square root of a number using Newton's method.
This function will print to stdout the amount of time it took to
execute.
parameters:
`x`: the input to the square root function.
`x0`: initial guess.
`iter`: number of iterations.
"""
tdump = TextDumper()
tdump.dump(x, "x", ['R', '8'])
tdump.dump(x0, "x0", ['R', '8'])
tdump.dump(iter, "iter", ['I', '4'])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.square_root_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.square_root_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def rand_array(n, mean, std, unpack=True):
"""Get an array of random numbers from a uniform distribution.
parameters:
`n`: amount of random numbers.
`mean`: the mean of the distribution.
`std`: the standard deviation of the distribution.
"""
tdump = TextDumper()
tdump.dump(n, "n", ['I', '4'])
tdump.dump(mean, "mean", ['R', '8'])
tdump.dump(std, "std", ['R', '8'])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.rand_array_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.rand_array_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def sin_vector(v, w, unpack=True):
"""Given a vector of values, it returns the sin of each of its
elements.
parameters:
`v`: input vector
`w`: input vector
"""
tdump = TextDumper()
tdump.dump(v, "v", ['T', ['R', '8']])
tdump.dump(w, "w", ['T', ['R', '8']])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.sin_vector_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.sin_vector_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def solve(A, B, unpack=True):
"""Solve a system of linear equations, A*X = B, where X is
unknown; similar functionality to the \\ operator in
Matlab/Octave, ie. X = A \\ B
parameters:
`A`: matrix A
`B`: matrix B
"""
tdump = TextDumper()
tdump.dump(A, "A", ['T', ['R', '8']])
tdump.dump(B, "B", ['T', ['R', '8']])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.solve_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.solve_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def qr(X, unpack=True):
"""Decomposition of X into an orthogonal matrix Q and a right
triangular matrix R, such that Q*R = X.
parameters:
`X`: input matrix
"""
tdump = TextDumper()
tdump.dump(X, "X", ['T', ['R', '8']])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.qr_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.qr_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def inverse_det(A, unpack=True):
"""Find the inverse and determinant of a square matrix using
the armadillo library.
parameters:
`A`: input matrix
"""
tdump = TextDumper()
tdump.dump(A, "A", ['T', ['R', '8']])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.inverse_det_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.inverse_det_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def rand_path(npoints, ntrials, delay, unpack=True):
"""Generate realizations from the Negative Feedback model by
collecting each point that the DSSA generates. This function
returns `t` and `x`.
parameters:
`npoints`: number of points per realization
`ntrials`: number of realizations
`delay`: time by which an event is delayed
"""
tdump = TextDumper()
tdump.dump(npoints, "npoints", ['I', '4'])
tdump.dump(ntrials, "ntrials", ['I', '4'])
tdump.dump(delay, "delay", ['R', '8'])
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.rand_path_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.rand_path_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val
def gen_tensors(unpack=True):
"""Generate tensors of dimension 4.
"""
tdump = TextDumper()
in_str = tdump.close()
len_in = len(in_str)
out_str = ctypes.POINTER(c_char)()
len_out = c_size_t(0)
LIB.gen_tensors_py(c_size_t(len_in),
c_char_p(in_str),
ctypes.byref(len_out),
ctypes.byref(out_str))
if out_str[:1] == 'E':
xc_error_msg = out_str[1:len_out.value]
raise RuntimeError(xc_error_msg)
val = TextParser(out_str[:len_out.value]).parse()
LIB.gen_tensors_py_clear()
if unpack:
if val:
return val.values()[0] if len(val) == 1 else val.values()
return None
else:
return val