Python mpfr_number_p示例

示例#1

文件： convert.py 项目： sn6uv/gmpy_cffi

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

示例#2

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

示例#3

文件： mpfr.py 项目： sundarnagarajan/gmpy_cffi

 def __int__(self):
     if not gmp.mpfr_number_p(self._mpfr):
         raise ValueError("Cannot convert '%s' to int" % self)
     elif gmp.mpfr_fits_slong_p(self._mpfr, gmp.MPFR_RNDN):
         return gmp.mpfr_get_si(self._mpfr, gmp.MPFR_RNDN)
     elif gmp.mpfr_fits_ulong_p(self._mpfr, gmp.MPFR_RNDN):
         return gmp.mpfr_get_ui(self._mpfr, gmp.MPFR_RNDN)
     else:
         tmp_mpz = _new_mpz()
         gmp.mpfr_get_z(tmp_mpz, self._mpfr, gmp.MPFR_RNDN)
         res = _mpz_to_pylong(tmp_mpz)
         _del_mpz(tmp_mpz)
         return res