def ldexp(ctx, x, n):
r"""
Computes `x 2^n` efficiently. No rounding is performed.
The argument `x` must be a real floating-point number (or
possible to convert into one) and `n` must be a Python ``int``.
>>> from mpmath import *
>>> mp.dps = 15; mp.pretty = False
>>> ldexp(1, 10)
mpf('1024.0')
>>> ldexp(1, -3)
mpf('0.125')
"""
x = ctx.convert(x)
return ctx.make_mpf(libmp.mpf_shift(x._mpf_, n))
def ldexp(ctx, x, n):
r"""
Computes `x 2^n` efficiently. No rounding is performed.
The argument `x` must be a real floating-point number (or
possible to convert into one) and `n` must be a Python ``int``.
>>> from mpmath import *
>>> mp.dps = 15; mp.pretty = False
>>> ldexp(1, 10)
mpf('1024.0')
>>> ldexp(1, -3)
mpf('0.125')
"""
x = ctx.convert(x)
return ctx.make_mpf(libmp.mpf_shift(x._mpf_, n))
def ldexp(ctx, x, n):
a, b = ctx.convert(x)._mpi_
a = libmp.mpf_shift(a, n)
b = libmp.mpf_shift(b, n)
return ctx.make_mpf((a,b))
def ldexp(ctx, x, n):
a, b = ctx.convert(x)._mpi_
a = libmp.mpf_shift(a, n)
b = libmp.mpf_shift(b, n)
return ctx.make_mpf((a, b))
