Module ulp_diff

Functions

c_mem_cast(x, f=None, t=None)
do a c-style memory cast

source code

ulp_diff_maker(converter, negative_zero)
Getting the ulp difference of floats and doubles is similar.

source code

dulpdiff(a, b)
Get the number of doubles between two doubles.

source code

fulpdiff(a, b)

source code

ulpdiff(a, b)
Get the number of doubles between two doubles.

source code

Variables

dbl_to_lng = <functools.partial object>

lng_to_dbl = <functools.partial object>

flt_to_int = <functools.partial object>

int_to_flt = <functools.partial object>

__package__ = 'qubx'

Function Details

do a c-style memory cast

In Python...

x = 12.34 y = c_mem_cast(x, 'd', 'l')

... should be equivilent to the following in c...

double x = 12.34; long y = *(long*)&x;

Getting the ulp difference of floats and doubles is similar. Only difference if the offset and converter.