On Friday, 3 March 2017 at 18:09:02 UTC, Jonathan M. Wilbur wrote:
I have tried to come up with a good way to get the mantissa,
exponent, and base from a real number, and I just can't come up
with a good cross-platform way of doing it. I know about
std.math.frexp(), but that function only gives you another real
as the mantissa. I need an integral mantissa, exponent, and
base.
Is there either (1) a crafty, cross-platform way of doing this
or (2) a function in a standard library that does this that I
somehow missed? If there is no such function, what are your
thoughts on me implementing such a thing and submitting it to
Phobos, probably similar to how frexp is implemented (elseifs
for each FP format)?
The various functions in std.math mostly extract these values on
their own, using the floatTraits template to help.
The mach library has the module mach.math.floats.extract:
https://github.com/pineapplemachine/mach.d/tree/master/mach/math/floats
