CVS log for src/tests/lib/libm/t_modf.c

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modfl(3): Fix conversion from FreeBSD.

LDBL_MANL_SIZE is spelled EXT_FRACLBITS -- and not EXT_FRACHBITS.

PR lib/58237: modfl returns wrong answers on ld128 architectures

tests/lib/libm/t_modf: Mark modfl xfail on ld128.

PR lib/58237: modfl returns wrong answers on ld128 architectures

tests/lib/libm/t_modf: Use isinf(INFINITY) to detect inf support.

Apparently VAX defines the INFINITY macro even though it's not
actually an infinity and isinf returns zero for it.

tests/lib/libm/t_modf: Check sign of modf on infinities too.

Normally I don't like CHECK(A && B) and favour CHECK(A); CHECK(B)
instead, so you can see which one failed, but in this case the inputs
are displayed anyway so we don't lose anything unless the
floating-point printer is broken.

tests/lib/libm/t_modf.c: Expand modf/modff/modfl tests.

1. Exercise more edge cases around the largest exponent that can
   represent non-integers.

2. - Verify modf can handle all cases modff can.
   - Veriy modf can handle some cases modff can't.
   - Verify modfl can handle all cases modf or modff can.
   - If long double isn't just double, verify modfl can handle some
     cases modf and modff can't.

3. Check infinities and NaN.

4. Verify oddness, i.e., modf(-x) = -modf(x).

5. Display more useful diagnostics in case any of this goes wrong.

Rebase to HEAD as of a few days ago.

Rebase.

file t_modf.c was added on branch tls-maxphys on 2014-08-20 00:04:50 +0000

file t_modf.c was added on branch tls-earlyentropy on 2014-08-10 06:57:22 +0000

Add modfl(3). From FreeBSD.