def _mpq_to_str(a, base):
l = (gmp.mpz_sizeinbase(gmp.mpq_numref(a), base) +
gmp.mpz_sizeinbase(gmp.mpq_denref(a), base) + 3)
p = ffi.new('char[]', l)
gmp.mpq_get_str(p, base, a)
if PY3:
return ffi.string(p).decode('UTF-8')
else:
return ffi.string(p)
def _mpq_to_str(a, base):
l = (gmp.mpz_sizeinbase(gmp.mpq_numref(a), base) +
gmp.mpz_sizeinbase(gmp.mpq_denref(a), base) + 3)
p = ffi.new('char[]', l)
gmp.mpq_get_str(p, base, a)
if PY3:
return ffi.string(p).decode('UTF-8')
else:
return ffi.string(p)
def _mpfr_to_str(a):
precision = int(log10(2) * gmp.mpfr_get_prec(a) + 2)
buf = ffi.new('char []', precision + 10)
fmtstr = "%.{0}Rg".format(precision)
buflen = gmp.mpfr_sprintf(buf, fmtstr.encode('UTF-8'), a)
if PY3:
pybuf = ffi.string(buf).decode('UTF-8')
else:
pybuf = ffi.string(buf)
if gmp.mpfr_number_p(a) and '.' not in pybuf:
pybuf = pybuf + '.0'
return pybuf
def _mpfr_to_str(a):
precision = int(log10(2) * gmp.mpfr_get_prec(a) + 2)
buf = ffi.new('char []', precision + 10)
fmtstr = "%.{0}Rg".format(precision)
buflen = gmp.mpfr_sprintf(buf, fmtstr.encode('UTF-8'), a)
if PY3:
pybuf = ffi.string(buf).decode('UTF-8')
else:
pybuf = ffi.string(buf)
if gmp.mpfr_number_p(a) and '.' not in pybuf:
pybuf = pybuf + '.0'
return pybuf
def mpc_version():
"""
mpc_version() -> string
Return string giving current MPC version. Return None if MPC
support is not available.
"""
return "MPC {0}".format(ffi.string(gmp.mpc_get_version()))
def mp_version():
"""
mp_version() -> string
Return string giving the name and version of the multiple precision
library used.
"""
return "GMP {0}".format(ffi.string(gmp.gmp_version))
def _mpz_to_str(a, base):
"""
Return string representation of a in base base.
:type a: mpz_t
:param base: 2..62
:type base: int
:rtype: str
"""
l = gmp.mpz_sizeinbase(a, base) + 2
p = ffi.new('char[]', l)
gmp.mpz_get_str(p, base, a)
if PY3:
return ffi.string(p).decode('UTF-8')
else:
return ffi.string(p)
def _mpz_to_str(a, base):
"""
Return string representation of a in base base.
:type a: mpz_t
:param base: 2..62
:type base: int
:rtype: str
"""
l = gmp.mpz_sizeinbase(a, base) + 2
p = ffi.new('char[]', l)
gmp.mpz_get_str(p, base, a)
if PY3:
return ffi.string(p).decode('UTF-8')
else:
return ffi.string(p)