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9120a57f48
The ldbl-128ibm implementations of remainderl and remquol have logic resulting in incorrect tests for equality of the absolute values of the arguments. Equality is tested based on the integer representations of the high and low parts, with the sign bit masked off the high part - but when this changes the sign of the high part, the sign of the low part needs to be changed as well, and failure to do this means arguments are wrongly treated as equal when they are not. This patch fixes the logic to adjust signs of low parts as needed. Tested for powerpc. [BZ #19603] * sysdeps/ieee754/ldbl-128ibm/e_remainderl.c (__ieee754_remainderl): Adjust sign of integer version of low part when taking absolute value of high part. * sysdeps/ieee754/ldbl-128ibm/s_remquol.c (__remquol): Likewise. * math/libm-test.inc (remainder_test_data): Add another test. (remquo_test_data): Likewise. |
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