Remove residual blank line at start of Makefile

This is a residual of the $FreeBSD$ removal.

MFC After: 3 days (though I'll just run the command on the branches)
Sponsored by: Netflix

Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

lib/msun: Exclude ignored-pragmas from -Werror

This avoids build failures due to the clang 12 warning:
'#pragma FENV_ACCESS' is not supported on this target - ignored

Clang 12 currently emits t

lib/msun: Exclude ignored-pragmas from -Werror

This avoids build failures due to the clang 12 warning:
'#pragma FENV_ACCESS' is not supported on this target - ignored

Clang 12 currently emits this warning for all non-x86 architectures.
While this can result in incorrect code generation (e.g. on AArch64 some
exceptions are not raised as expected), this is a pre-existing issue and
we should not fail the build due to this warning.

Reviewed By: dim, emaste
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29743

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lib/msun/tests: Drop WARNS=6

This is the default already, so there is no need to override it.

Reported by: kevans

lib/msun/tests: Re-enable csqrt_test on AArch64

The LLVM bug was fixed a long time ago and with D29076 this test actually
passes now.

Reviewed By: andrew
Differential Revision: https://reviews.free

lib/msun/tests: Re-enable csqrt_test on AArch64

The LLVM bug was fixed a long time ago and with D29076 this test actually
passes now.

Reviewed By: andrew
Differential Revision: https://reviews.freebsd.org/D29092

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lib/msun/tests: Add more debug output to fenv_test.c

Output a hex dump of the current fenv and the expected value to allow
comparing them without having to resort to interactive use of GDB.

lib/msun: Allow building tests with WARNS=6

The only change needed is to mark a few variables as static.

Convert the msun tests to ATF

This provides better error messages that just an assertion failure and
also makes it easier to mark individual tests as XFAIL.
It was also helpful when coming up with D

Convert the msun tests to ATF

This provides better error messages that just an assertion failure and
also makes it easier to mark individual tests as XFAIL.
It was also helpful when coming up with D28786 and D28787.

Differential Revision: https://reviews.freebsd.org/D28798

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Build lib/msun tests with compiler builtins disabled

This forces the compiler to emit calls to libm functions, instead of
possibly substituting pre-calculated results at compile time, which
should h

Build lib/msun tests with compiler builtins disabled

This forces the compiler to emit calls to libm functions, instead of
possibly substituting pre-calculated results at compile time, which
should help to actually test those functions.

Reviewed by: emaste, arichardson, ngie
Differential Revision: https://reviews.freebsd.org/D28577
MFC after: 3 days

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Update libm tests from NetBSD

I did this without a full vendor update since that would cause too many
conflicts. Since these files now almost match the NetBSD sources the
next git subtree merge shou

Update libm tests from NetBSD

I did this without a full vendor update since that would cause too many
conflicts. Since these files now almost match the NetBSD sources the
next git subtree merge should work just fine.

Reviewed By: lwhsu
Differential Revision: https://reviews.freebsd.org/D28797

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Fix incorrect hypotl(3) result with subnormal numbers

This adjusts the factor used to scale the subnormal numbers, so it
becomes the right value after adjusting its exponent. Thanks to Steve
Kargl f

Fix incorrect hypotl(3) result with subnormal numbers

This adjusts the factor used to scale the subnormal numbers, so it
becomes the right value after adjusting its exponent. Thanks to Steve
Kargl for finding the most elegant fix.

Also enable the hypot tests, and add a test case for this bug.

PR: 253313
MFC after: 1 week

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MFH

Sponsored by: Rubicon Communications, LLC (netgate.com)

Don't explicitly specify c99 or gnu99 as the default is now gnu99.

MFC after: 2 weeks

Enable long double tests on RISC-V

Some of the NetBSD contributed tests are gated behind the
__HAVE_LONG_DOUBLE flag. This flag seems to be defined only for
platforms whose long double is larger tha

Enable long double tests on RISC-V

Some of the NetBSD contributed tests are gated behind the
__HAVE_LONG_DOUBLE flag. This flag seems to be defined only for
platforms whose long double is larger than their double. I could not
find this explicitly documented anywhere, but it is implied by the
definitions in NetBSD's sys/arch/${arch}/include/math.h headers, and the
following assertion from the UBSAN code:

#ifdef __HAVE_LONG_DOUBLE
long double LD;
ASSERT(sizeof(LD) > sizeof(uint64_t));
#endif

RISC-V has 128-bit long doubles, so enable the tests on this platform,
and update the comments to better explain the purpose of this flag.

Reviewed by: ngie
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25419

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Merge ^/head r351317 through r351731.

Unskip test cases from netbsd-tests by defining __HAVE_FENV

This unskips:
- lib.libc.stdlib.strtod_test.strtod_round
- lib.msun.fe_round_test.t_nofe_round

In lib/msun/tests/Makefile only define

Unskip test cases from netbsd-tests by defining __HAVE_FENV

This unskips:
- lib.libc.stdlib.strtod_test.strtod_round
- lib.msun.fe_round_test.t_nofe_round

In lib/msun/tests/Makefile only define on fe_round_test.c because
lib.msun.ilogb_test.ilogb will get wrong results and needs more examination.

MFC after: 1 week
Sponsored by: The FreeBSD Foundation

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Resolve conflicts between macros in fenv.h and ieeefp.h

This is a follow-up to r321483, which disabled -Wmacro-redefined for
some lib/msun tests.

If an application included both fenv.h and ieeefp.h

Resolve conflicts between macros in fenv.h and ieeefp.h

This is a follow-up to r321483, which disabled -Wmacro-redefined for
some lib/msun tests.

If an application included both fenv.h and ieeefp.h, several macros such
as __fldcw(), __fldenv() were defined in both headers, with slightly
different arguments, leading to conflicts.

Fix this by putting all the common macros in the machine-specific
versions of ieeefp.h. Where needed, update the arguments in places
where the macros are invoked.

This also slightly reduces the differences between the amd64 and i386
versions of ieeefp.h.

Reviewed by: kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D15633

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Merge ^/head r321383 through r322397.

MFhead@r321829

MFhead@r321584

Mask issues with duplicate definitions for __fnstcw, __fldenv, and __fldcw on
i386 by ignoring -Wmacro-redefined.

This is a bandaid until the code is fixed and will be reverted before MFC.

Convert lib/msun/trig_test from TAP to ATF format

Only expose :accuracy and :reduction if !i386, similar to before,
but more holistically to avoid future -Wunused issue with the unused
functions.

M

Convert lib/msun/trig_test from TAP to ATF format

Only expose :accuracy and :reduction if !i386, similar to before,
but more holistically to avoid future -Wunused issue with the unused
functions.

MFC after: 1 month

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Raise WARNS to 1

This will enable warnings with the msun tests.

MFC after: 1 month

Convert lib/msun/trig_test from TAP to ATF format

Only expose :accuracy and :reduction if !i386, similar to before,
but more holistically to avoid future -Wunused issue with the unused
functions.

M

Convert lib/msun/trig_test from TAP to ATF format

Only expose :accuracy and :reduction if !i386, similar to before,
but more holistically to avoid future -Wunused issue with the unused
functions.

MFC after: 1 month

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Raise WARNS to 1

This will enable warnings with the msun tests.

MFC after: 1 month