From 374f7f61214967bb4e2257695aeeeecc2a77f369 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Fri, 14 Mar 2014 07:35:43 -0500 Subject: PowerPC: remove wrong ceill implementation for PowerPC64 The ceill assembly implementation (sysdeps/powerpc/powerpc64/fpu/s_ceill.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_ceill.c instead fixes the failing math. Fixes BZ#16701. --- math/libm-test.inc | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'math') diff --git a/math/libm-test.inc b/math/libm-test.inc index 10e7806846..c151b7d5f3 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -6106,6 +6106,15 @@ static const struct test_f_f_data ceil_test_data[] = TEST_f_f (ceil, -72057594037927936.75L, -72057594037927936.0L), TEST_f_f (ceil, -72057594037927937.5L, -72057594037927937.0L), + /* 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 (ceil, 34503599627370498.515625L, 34503599627370499.0L), + TEST_f_f (ceil, -34503599627370498.515625L, -34503599627370498.0L), +# if LDBL_MANT_DIG >= 106 + TEST_f_f (ceil, 1192568192774434123539907640624.484375L, 1192568192774434123539907640625.0L), + TEST_f_f (ceil, -1192568192774434123539907640624.484375L, -1192568192774434123539907640624.0L), +# endif + TEST_f_f (ceil, 10141204801825835211973625643007.5L, 10141204801825835211973625643008.0L), TEST_f_f (ceil, 10141204801825835211973625643008.25L, 10141204801825835211973625643009.0L), TEST_f_f (ceil, 10141204801825835211973625643008.5L, 10141204801825835211973625643009.0L), -- cgit 1.4.1