Module Name: src
Committed By: riastradh
Date: Sat May 11 02:07:54 UTC 2024
Modified Files:
src/lib/libm/src: s_nexttoward.c
src/tests/lib/libm: t_next.c
Log Message:
nexttoward(3): Fix high-word test on small positive subnormals.
By this point in the logic, x can't be zero, so it's either positive
or negative.
The high word hx, however, can be zero, when x is a small positive
subnormal. This means x is a small positive subnormal, so if x > y
we are computing nextDown, and if x < y we are computing nextUp.
hx is a (signed 32-bit) integer, not a double floating-point number,
so it's a little silly to compare hx > 0.0. But that on its own
isn't enough to trigger the bug because all signed 32-bit integers
can be represented by double on all NetBSD architectures.
PR lib/58236
To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/lib/libm/src/s_nexttoward.c
cvs rdiff -u -r1.5 -r1.6 src/tests/lib/libm/t_next.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
