From 98fb27a373f37554232e0060eef1a5bb00a07eb0 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Fri, 14 Mar 2014 12:27:52 -0500 Subject: PowerPC: remove wrong nearbyintl implementation for PPC64 The nearbyintl assembly implementation (sysdeps/powerpc/powerpc64/fpu/s_nearbyintl.S) returns wrong results for some inputs where first double is a exact integer and the precision is determined by second long double. Checking on implementation comments and history, I am very confident the assembly implementation was based on a version before commit 5c68d401698a58cf7da150d9cce769fa6679ba5f that fixes BZ#2423 (Errors in long double (ldbl-128ibm) rounding functions in glibc-2.4). By just removing the implementation and make the build select sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c instead fixes the failing math. Fixes BZ#16706. --- math/libm-test.inc | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'math') diff --git a/math/libm-test.inc b/math/libm-test.inc index c151b7d5f3..1d602eb805 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -9520,6 +9520,16 @@ static const struct test_f_f_data nearbyint_test_data[] = TEST_f_f (nearbyint, -281474976710656.75, -281474976710657.0, NO_INEXACT_EXCEPTION), TEST_f_f (nearbyint, -562949953421312.75, -562949953421313.0, NO_INEXACT_EXCEPTION), TEST_f_f (nearbyint, -1125899906842624.75, -1125899906842625.0, NO_INEXACT_EXCEPTION), +#endif +#ifdef TEST_LDOUBLE + /* Check cases where first double is a exact integer higher than 2^52 and + the precision is determined by second long double for IBM long double. */ + TEST_f_f (nearbyint, 34503599627370498.515625L, 34503599627370499.0L), + TEST_f_f (nearbyint, -34503599627370498.515625L, -34503599627370499.0L), +# if LDBL_MANT_DIG >= 106 + TEST_f_f (nearbyint, 1192568192774434123539907640624.484375L, 1192568192774434123539907640624.0L), + TEST_f_f (nearbyint, -1192568192774434123539907640624.484375L, -1192568192774434123539907640624.0L), +# endif #endif }; -- cgit v1.2.3