K 10
svn:author
V 3
bde
K 8
svn:date
V 27
2018-07-24T10:10:16.860482Z
K 7
svn:log
V 555
Fix the conversion to use nan_mix() in r336362.  fmod*(x, y),
remainder*(x, y) and remquo*(x, y, quo) were broken for y = 0 by changing
multiplication by y to addition of y.  (When y is 0, the result should be
NaN but became 1 for finite x.)

Use a new macro nan_mix_op() to give more control over the mixing, and
expand comments.

Recent re-testing missed finding this bug since I only tested the macro
version on amd64 and i386 and these arches don't use the C versions (they
use either asm versions or builtins).

Reported by:	enh via freebsd-numerics

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