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8c6c923636
The i386 versions of acoshf and acosh raise a spurious "invalid" exception for an argument that is a quiet NaN with the sign bit set. The integer arithmetic to detect arguments < 1 also detects -NaN, and then the computation 0 / 0 in that case raises the exception. This patch fixes this by using (x - x) / (x - x) as the computation in that case instead, which will always raise the exception for non-NaN arguments reaching that code, but not for quiet NaN arguments. Tested for x86_64 and x86. [BZ #19032] * sysdeps/i386/fpu/e_acosh.S (__ieee754_acosh): For arguments < 1, compute result as (x - x) / (x - x) not as 0 / 0. * sysdeps/i386/fpu/e_acoshf.S (__ieee754_acoshf): Likewise. * math/libm-test.inc (acosh_test_data): Add another test of acosh. |
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| gnu | ||
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| i386 | ||
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| ieee754 | ||
| init_array | ||
| m68k | ||
| mach | ||
| microblaze | ||
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| nacl | ||
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| sh | ||
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| tile | ||
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| wordsize-32 | ||
| wordsize-64 | ||
| x86 | ||
| x86_64 | ||