I wrote these to test amd64 asm functions that used
maxss, maxsd, minss, and minsd, but it turns out that
those instructions don't handle NaNs and signed zero
in the same way as fmin() and fmax() are required to,
so we're stuck with the C versions for now.
The first test comes from OpenBSD, and the others are additions or
adaptations.
This is based on OpenBSD's
src/regress/lib/libc/sprintf/sprintf_test.c, v1.3.
I deliberately did not use v1.4 because it's bogus.
after similar calls related to struct pwd in libutil/pw_util.c:
- gr_equal()
Perform a deep comparison of two struct grp's. It does a thorough, yet
unoptimized comparison of all the members regardless of order.
- gr_make()
Create a string (see group(5)) from a struct grp.
- gr_dup()
Duplicate a struct grp. Returns a value that is a single contiguous
block of memory.
- gr_scan()
Create a struct grp from a string (as produced by gr_make()).
MFC after: 3 weeks
mostly just test corner cases rather than accuracy. Some of the
tests don't pass right now if you compile libm at -O2 due to gcc
constant-folding some things that it shouldn't. I'll fix that
shortly.
Four tests currently fail:
test_ether_line_bad_1() and test_ether_line_bad_2() due to bugs in
ether_line(3).
test_ether_ntohost() and test_ether_hostton() due to not being fully
implemented tests.
to floating-point, the result is a quiet NaN. The current implementation
may return a signaling NaN, and the vendor has no plans for changing this,
for reasons explained in the comment I added.
It is by no means expected to perform a complete test of the library
for correctness, but is meant to test the API to make sure libmp (or
libcrypto) updates don't totally break the library.
- Use fesetround() instead of fpsetround(), and add tests for
various rounding modes.
- Test that all NaNs generated are quiet.
Some of these tests won't pass until problems in vendor sources
(gdtoa and gcc) are fixed and new versions imported, but I
want to get these changes into the tree before I accidentally
blow them away again. :-(
tests. (Buy 10, get one free!) The separate categories were
already there; they just weren't labeled.
- Use fesetround() instead of fpsetround(), since the former is
standard and implemented on all supported architectures. Add
tests for each rounding mode.
- Add additional tests for subnormals.
Some of these tests won't pass until problems in vendor sources
(gdtoa and gcc) are fixed and new versions imported, but I
want to get these changes into the tree before I accidentally
blow them away.
