Revert to previous as requested by Rin.

As I found out the hack only applies to libc/softfloat which has issues on
m68k.

The hack should not have been applied to all m68k configurations.

Opps...Fix build.

Fix segfaults of libm tests noticable on m68k.

Also document it in doc/HACKS.

tests: Add test for remquo

This test currently fails, because remquo has bugs. (A bugfix will be
committed soon.) Test vectors derived from results from code by
Charles Karney in GeodesicLib/proj, and manually inspected.

math.h: Add math_errhandling, MATH_ERRNO, MATH_ERREXCEPT.

XXX Should maybe put a __math_errhandling in machine/math.h, but only
VAX uses MATH_ERRNO and that's not likely to change any time soon, so
this will serve for now with less churn.

PR standards/56234: missing C99 frobs in <math.h>

branches: 1.49.2;
tests/lib/libm: Test nextafter/nexttoward and variants.

The tests are fairly trivial but should work without any conditionals
about floating-point formats.

branches: 1.48.2;
Add sincos{,f,l} from FreeBSD

fix build of t_cabsl from t_cabsl.cxx

t_cabsl source is in t_cabsl.cxx not t_cabsl.cc - the latter
is what bsd.tests.mk defaults to.

This only broke after my commit of share/mk/bsd.dep.mk rev 1.85
but I don't know why it didn't cause a problem previously.

branches: 1.46.2;
Add a test case for signbit.
(paranoia prior to a libm change)

Build libm tests with -fno-builtin.

This way they test libm, not whatever the compiler does.

We should _also_ have automatic integration tests for what the
compiler does, as a separate thing.

branches: 1.44.2;
Add test case for PR lib/50646.

Make sure that cabsl (aka __c99_cabsl) is usable from C++.

Blindly add __TEST_FENV in the hope of fixing the vax build.

(So we can include fenv.h, and then not use it - we ifdef vax out
for OS-portability reasons.)

branches: 1.42.12;
define __TEST_FENV in the makefile for t_fe_round
should fix vax build (it doesn't have fenv.h)

add test for fesetround/fegetround that uses lrint (and tests it a bunch).
It doesn't fail on amd64.

Add failing test for casinh

portability fixes

add failing test for PR lib/51427
ilogb(INFINITY)=-INT_MAX, it should be INT_MAX

while here, test raised exceptions, other values.

XXX some platforms don't have exceptions

branches: 1.37.2;
Add some tests of hypot() and hypotf()

add __TEST_FENV

put have fenv stuff elsewhere.

Sync list of fenv enabled architectures again (PR 48633), this time for mips
addition.

While PR 48633 is not properly fixed, keep the additional lists of
fenv-enabled architectures in sync.

Remove stale comment about ARM fenv support.

Mark the lib/libm/t_fmod test as an expected failure under QEMU,
with a reference to PR misc/44767.

Enable fenv.h on arm again

fenv(3) support for hppa

Disabel fenv tests for arm, the implementation is incomplete.

Add a test program for basic fenv.h rounding mode/exception mask testing.

branches: 1.26.2;
Use the same condition for HAVE_FENV

Add modfl(3). From FreeBSD.

Re-enable alpha IEEE compiler options

Comment out the ieee fp flags for alpha for now - something (tm) is not
working right, see PR port-alpha/48782.

Tune COPTS for alpha

branches: 1.21.2;
Define HAVE_FENV_H on architectures that support it.
What a mess, we need a central place for this!

Initial version of fmodl from FreeBSD.
Basic test case for the fmod family.

NetBSD 6.99.26: Switch i386 and amd64 to the x87 default control word
as initial value for new processes. This means that long double
computations get the expected 63bit mantissa. Binaries tagged as
compiled for 6.99.25 and older get the old value.

Add a simple test case to ensure that double and long double computation
are working correctly.

branches: 1.18.2;
Do not re-add -mieee option on alpha, it's already set by default.

branches: 1.17.2;
Remove 't_rint' as it was committed accidentally.

As couple of checks fails on i386/qemu, reduce tolerance.

Add t_sqrt and t_cbrt.

Basic IEEE tests for the hyperbolic sine and cosine.

IEEE checks for the exponential family.

IEEE checks for the arcus functions.

Few tests for the error functions.

IEEE corner case tests for the pow(3) family (incl. PR lib/45372).

Some tests for sine, cosine, and tangent.

Merge 't_floor' to 't_ceil', and simplify.

Start systematic testing of libm(3) by first evaluating the corner cases
(NaN, +0.0, -0.0, +Inf, -Inf) for the ldexp(3) and scalbn(3) families.

Try to generate infinite values in all available floating point formats
on the FPU and check isinf() and fpclassify() results. This is
different from the libc internal consistency checks testing PR
lib/33262.

Add a test case for PR lib/41931 reported by he@. It was verified that these
fail on NetBSD 5.99.48 amd64 but pass on amd64 Linux (glibc 2.7).

Move the round(3) checks from 't_libm' to their own 't_round'
for consistency. Add -Wfloat-equal and fix comparisons.

A test case for PR lib/44057.

Add dummy test cases for ceil(3) and floor(3). It is expected that at least
one of these will fail on guest x86_64 NetBSD under Qemu. Thanks to pgoyette@
for checking the broken floor(16.999999...) = 17.

Move the only regress/lib/libm test to the new atf format