https://gcc.gnu.org/g:2d6cf78161a71ed2839aae7633a0ef85366a8cd2
commit r15-11223-g2d6cf78161a71ed2839aae7633a0ef85366a8cd2 Author: Jakub Jelinek <[email protected]> Date: Tue Apr 21 13:20:00 2026 +0200 testsuite: Fix up builtin-math-6.c for mpc 1.4.* [PR124682] MPC 1.4.0 changed the handling of signed zeros in cpow results. These changes broke the builtin-math-6.c test. Looking at the differences, MPC 1.3.1 to 1.4.0 changes folding of the following calls in the test (it is always about the sign of the imag zero part, +-0.0 means below that MPC 1.3.1 returned positive 0.0 and MPC 1.4.0 returns -0.0 instead, and -+0.0 means conversely that MPC 1.3.1 returned -0.0 and MPC 1.4.0 returns positive 0.0. __builtin_cpow (__complex__ (-1.5e+0, 0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (-3.375e+0, +-0.0); __builtin_cpow (__complex__ (-1.5e+0, 0.0), __complex__ (-3.0e+0, -0.0)) = __complex__ (-2.96296296296296279848547783331014215946197509765625e-1, -+0.0); __builtin_cpow (__complex__ (1.5e+0, -0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (3.375e+0, -+0.0); __builtin_cpow (__complex__ (-2.0e+0, 0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (-8.0e+0, +-0.0); __builtin_cpow (__complex__ (-2.0e+0, 0.0), __complex__ (-3.0e+0, -0.0)) = __complex__ (-1.25e-1, -+0.0); __builtin_cpow (__complex__ (2.0e+0, -0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (8.0e+0, -+0.0); __builtin_cpow (__complex__ (-3.0e+0, 0.0), __complex__ (-4.0e+0, 0.0)) = __complex__ (1.2345679012345678327022824305458925664424896240234375e-2, -+0.0); __builtin_cpow (__complex__ (-3.0e+0, 0.0), __complex__ (4.0e+0, -0.0)) = __complex__ (8.1e+1, +-0.0); __builtin_cpow (__complex__ (3.0e+0, -0.0), __complex__ (4.0e+0, 0.0)) = __complex__ (8.1e+1, -+0.0); __builtin_cpow (__complex__ (-3.0e+0, 0.0), __complex__ (5.0e+0, 0.0)) = __complex__ (-2.43e+2, +-0.0); __builtin_cpow (__complex__ (-3.0e+0, 0.0), __complex__ (-5.0e+0, -0.0)) = __complex__ (-4.11522633744856002058210009408867335878312587738037109375e-3, -+0.0); __builtin_cpow (__complex__ (3.0e+0, -0.0), __complex__ (5.0e+0, 0.0)) = __complex__ (2.43e+2, -+0.0); __builtin_cpow (__complex__ (-4.0e+0, 0.0), __complex__ (-2.0e+0, 0.0)) = __complex__ (6.25e-2, -+0.0); __builtin_cpow (__complex__ (-4.0e+0, 0.0), __complex__ (2.0e+0, -0.0)) = __complex__ (1.6e+1, +-0.0); __builtin_cpow (__complex__ (4.0e+0, -0.0), __complex__ (2.0e+0, 0.0)) = __complex__ (1.6e+1, -+0.0); __builtin_cpow (__complex__ (1.5e+0, 0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (2.96296296296296279848547783331014215946197509765625e-1, -+0.0); __builtin_cpow (__complex__ (-1.5e+0, -0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (-2.96296296296296279848547783331014215946197509765625e-1, +-0.0); __builtin_cpow (__complex__ (-1.5e+0, -0.0), __complex__ (3.0e+0, -0.0)) = __complex__ (-3.375e+0, -+0.0); __builtin_cpow (__complex__ (2.0e+0, 0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (1.25e-1, -+0.0); __builtin_cpow (__complex__ (-2.0e+0, -0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (-1.25e-1, +-0.0); __builtin_cpow (__complex__ (-2.0e+0, -0.0), __complex__ (3.0e+0, -0.0)) = __complex__ (-8.0e+0, -+0.0); __builtin_cpow (__complex__ (3.0e+0, 0.0), __complex__ (-4.0e+0, 0.0)) = __complex__ (1.2345679012345678327022824305458925664424896240234375e-2, -+0.0); __builtin_cpow (__complex__ (3.0e+0, 0.0), __complex__ (-5.0e+0, 0.0)) = __complex__ (4.11522633744856002058210009408867335878312587738037109375e-3, -+0.0); __builtin_cpow (__complex__ (-3.0e+0, -0.0), __complex__ (-5.0e+0, 0.0)) = __complex__ (-4.11522633744856002058210009408867335878312587738037109375e-3, +-0.0); __builtin_cpow (__complex__ (-3.0e+0, -0.0), __complex__ (5.0e+0, -0.0)) = __complex__ (-2.43e+2, -+0.0); __builtin_cpow (__complex__ (-3.0e+0, -0.0), __complex__ (4.0e+0, 0.0)) = __complex__ (8.1e+1, -+0.0); __builtin_cpow (__complex__ (-3.0e+0, -0.0), __complex__ (-4.0e+0, -0.0)) = __complex__ (1.2345679012345678327022824305458925664424896240234375e-2, +-0.0); __builtin_cpow (__complex__ (4.0e+0, 0.0), __complex__ (-2.0e+0, 0.0)) = __complex__ (6.25e-2, -+0.0); __builtin_cpow (__complex__ (-4.0e+0, -0.0), __complex__ (2.0e+0, 0.0)) = __complex__ (1.6e+1, -+0.0); __builtin_cpow (__complex__ (-4.0e+0, -0.0), __complex__ (-2.0e+0, -0.0)) = __complex__ (6.25e-2, +-0.0); __builtin_cpowf (__complex__ (-1.5e+0, 0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (-3.375e+0, +-0.0); __builtin_cpowf (__complex__ (-1.5e+0, 0.0), __complex__ (-3.0e+0, -0.0)) = __complex__ (-2.96296298503875732421875e-1, -+0.0); __builtin_cpowf (__complex__ (1.5e+0, -0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (3.375e+0, -+0.0); __builtin_cpowf (__complex__ (-2.0e+0, 0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (-8.0e+0, +-0.0); __builtin_cpowf (__complex__ (-2.0e+0, 0.0), __complex__ (-3.0e+0, -0.0)) = __complex__ (-1.25e-1, -+0.0); __builtin_cpowf (__complex__ (2.0e+0, -0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (8.0e+0, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, 0.0), __complex__ (-4.0e+0, 0.0)) = __complex__ (1.2345679104328155517578125e-2, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, 0.0), __complex__ (4.0e+0, -0.0)) = __complex__ (8.1e+1, +-0.0); __builtin_cpowf (__complex__ (3.0e+0, -0.0), __complex__ (4.0e+0, 0.0)) = __complex__ (8.1e+1, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, 0.0), __complex__ (5.0e+0, 0.0)) = __complex__ (-2.43e+2, +-0.0); __builtin_cpowf (__complex__ (-3.0e+0, 0.0), __complex__ (-5.0e+0, -0.0)) = __complex__ (-4.1152262128889560699462890625e-3, -+0.0); __builtin_cpowf (__complex__ (3.0e+0, -0.0), __complex__ (5.0e+0, 0.0)) = __complex__ (2.43e+2, -+0.0); __builtin_cpowf (__complex__ (-4.0e+0, 0.0), __complex__ (-2.0e+0, 0.0)) = __complex__ (6.25e-2, -+0.0); __builtin_cpowf (__complex__ (-4.0e+0, 0.0), __complex__ (2.0e+0, -0.0)) = __complex__ (1.6e+1, +-0.0); __builtin_cpowf (__complex__ (4.0e+0, -0.0), __complex__ (2.0e+0, 0.0)) = __complex__ (1.6e+1, -+0.0); __builtin_cpowf (__complex__ (1.5e+0, 0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (2.96296298503875732421875e-1, -+0.0); __builtin_cpowf (__complex__ (-1.5e+0, -0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (-2.96296298503875732421875e-1, +-0.0); __builtin_cpowf (__complex__ (-1.5e+0, -0.0), __complex__ (3.0e+0, -0.0)) = __complex__ (-3.375e+0, -+0.0); __builtin_cpowf (__complex__ (2.0e+0, 0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (1.25e-1, -+0.0); __builtin_cpowf (__complex__ (-2.0e+0, -0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (-1.25e-1, +-0.0); __builtin_cpowf (__complex__ (-2.0e+0, -0.0), __complex__ (3.0e+0, -0.0)) = __complex__ (-8.0e+0, -+0.0); __builtin_cpowf (__complex__ (3.0e+0, 0.0), __complex__ (-4.0e+0, 0.0)) = __complex__ (1.2345679104328155517578125e-2, -+0.0); __builtin_cpowf (__complex__ (3.0e+0, 0.0), __complex__ (-5.0e+0, 0.0)) = __complex__ (4.1152262128889560699462890625e-3, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, -0.0), __complex__ (-5.0e+0, 0.0)) = __complex__ (-4.1152262128889560699462890625e-3, +-0.0); __builtin_cpowf (__complex__ (-3.0e+0, -0.0), __complex__ (5.0e+0, -0.0)) = __complex__ (-2.43e+2, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, -0.0), __complex__ (4.0e+0, 0.0)) = __complex__ (8.1e+1, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, -0.0), __complex__ (-4.0e+0, -0.0)) = __complex__ (1.2345679104328155517578125e-2, +-0.0); __builtin_cpowf (__complex__ (4.0e+0, 0.0), __complex__ (-2.0e+0, 0.0)) = __complex__ (6.25e-2, -+0.0); __builtin_cpowf (__complex__ (-4.0e+0, -0.0), __complex__ (2.0e+0, 0.0)) = __complex__ (1.6e+1, -+0.0); __builtin_cpowf (__complex__ (-4.0e+0, -0.0), __complex__ (-2.0e+0, -0.0)) = __complex__ (6.25e-2, +-0.0); __builtin_cpowf (__complex__ (-1.5e+0, 0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (-3.375e+0, +-0.0); __builtin_cpowf (__complex__ (-1.5e+0, 0.0), __complex__ (-3.0e+0, -0.0)) = __complex__ (-2.96296296296296296301315750798544002009293762966990470886e-1, -+0.0); __builtin_cpowf (__complex__ (1.5e+0, -0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (3.375e+0, -+0.0); __builtin_cpowf (__complex__ (-2.0e+0, 0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (-8.0e+0, +-0.0); __builtin_cpowf (__complex__ (-2.0e+0, 0.0), __complex__ (-3.0e+0, -0.0)) = __complex__ (-1.25e-1, -+0.0); __builtin_cpowf (__complex__ (2.0e+0, -0.0), __complex__ (3.0e+0, 0.0)) = __complex__ (8.0e+0, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, 0.0), __complex__ (-4.0e+0, 0.0)) = __complex__ (1.23456790123456790122724786341878999706977992900647222996e-2, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, 0.0), __complex__ (4.0e+0, -0.0)) = __complex__ (8.1e+1, +-0.0); __builtin_cpowf (__complex__ (3.0e+0, -0.0), __complex__ (4.0e+0, 0.0)) = __complex__ (8.1e+1, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, 0.0), __complex__ (5.0e+0, 0.0)) = __complex__ (-2.43e+2, +-0.0); __builtin_cpowf (__complex__ (-3.0e+0, 0.0), __complex__ (-5.0e+0, -0.0)) = __complex__ (-4.11522633744855967075749287806263332356593309668824076653e-3, -+0.0); __builtin_cpowf (__complex__ (3.0e+0, -0.0), __complex__ (5.0e+0, 0.0)) = __complex__ (2.43e+2, -+0.0); __builtin_cpowf (__complex__ (-4.0e+0, 0.0), __complex__ (-2.0e+0, 0.0)) = __complex__ (6.25e-2, -+0.0); __builtin_cpowf (__complex__ (-4.0e+0, 0.0), __complex__ (2.0e+0, -0.0)) = __complex__ (1.6e+1, +-0.0); __builtin_cpowf (__complex__ (4.0e+0, -0.0), __complex__ (2.0e+0, 0.0)) = __complex__ (1.6e+1, -+0.0); __builtin_cpowf (__complex__ (1.5e+0, 0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (2.96296296296296296301315750798544002009293762966990470886e-1, -+0.0); __builtin_cpowf (__complex__ (-1.5e+0, -0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (-2.96296296296296296301315750798544002009293762966990470886e-1, +-0.0); __builtin_cpowf (__complex__ (-1.5e+0, -0.0), __complex__ (3.0e+0, -0.0)) = __complex__ (-3.375e+0, -+0.0); __builtin_cpowf (__complex__ (2.0e+0, 0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (1.25e-1, -+0.0); __builtin_cpowf (__complex__ (-2.0e+0, -0.0), __complex__ (-3.0e+0, 0.0)) = __complex__ (-1.25e-1, +-0.0); __builtin_cpowf (__complex__ (-2.0e+0, -0.0), __complex__ (3.0e+0, -0.0)) = __complex__ (-8.0e+0, -+0.0); __builtin_cpowf (__complex__ (3.0e+0, 0.0), __complex__ (-4.0e+0, 0.0)) = __complex__ (1.23456790123456790122724786341878999706977992900647222996e-2, -+0.0); __builtin_cpowf (__complex__ (3.0e+0, 0.0), __complex__ (-5.0e+0, 0.0)) = __complex__ (4.11522633744855967075749287806263332356593309668824076653e-3, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, -0.0), __complex__ (-5.0e+0, 0.0)) = __complex__ (-4.11522633744855967075749287806263332356593309668824076653e-3, +-0.0); __builtin_cpowf (__complex__ (-3.0e+0, -0.0), __complex__ (5.0e+0, -0.0)) = __complex__ (-2.43e+2, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, -0.0), __complex__ (4.0e+0, 0.0)) = __complex__ (8.1e+1, -+0.0); __builtin_cpowf (__complex__ (-3.0e+0, -0.0), __complex__ (-4.0e+0, -0.0)) = __complex__ (1.23456790123456790122724786341878999706977992900647222996e-2, +-0.0); __builtin_cpowf (__complex__ (4.0e+0, 0.0), __complex__ (-2.0e+0, 0.0)) = __complex__ (6.25e-2, -+0.0); __builtin_cpowf (__complex__ (-4.0e+0, -0.0), __complex__ (2.0e+0, 0.0)) = __complex__ (1.6e+1, -+0.0); __builtin_cpowf (__complex__ (-4.0e+0, -0.0), __complex__ (-2.0e+0, -0.0)) = __complex__ (6.25e-2, +-0.0); The following patch adjusts the testcase, so that it ignores the sign of zero imag part. 2026-04-21 Jakub Jelinek <[email protected]> PR testsuite/124682 * gcc.dg/torture/builtin-math-6.c (TESTIT_COMPLEX_R2_ISZ): Define. (TESTIT_COMPLEX_R2_ALLNEG): Use TESTIT_COMPLEX_R2_ISZ instead of TESTIT_COMPLEX_R2. Reviewed-by: Richard Biener <[email protected]> (cherry picked from commit 727f2230548dd08fe1a0f9549cd7011290eaaf31) Diff: --- gcc/testsuite/gcc.dg/torture/builtin-math-6.c | 55 ++++++++++++++++++--------- 1 file changed, 38 insertions(+), 17 deletions(-) diff --git a/gcc/testsuite/gcc.dg/torture/builtin-math-6.c b/gcc/testsuite/gcc.dg/torture/builtin-math-6.c index 462c7d3ee019..eaa9cf3e6459 100644 --- a/gcc/testsuite/gcc.dg/torture/builtin-math-6.c +++ b/gcc/testsuite/gcc.dg/torture/builtin-math-6.c @@ -155,26 +155,47 @@ extern void link_error(int, int); link_error(__LINE__, VAL_NUM); \ } while (0) -/* For complex numbers, call the TESTIT_COMPLEX_R2 macro for all +/* Similar to TESTIT_COMPLEX_R2, but doesn't check sign of imag part + if imag part is zero. MPC between 1.3.1 and 1.4.0 changed the + handling of it. */ +#define TESTIT_COMPLEX_R2_ISZ(VAL_NUM, FUNC, ARG0, ARG1, RES) do { \ + if (COMPLEX_DIFF1PCT_F (__builtin_##FUNC##f(ARG0, ARG1), (RES)) \ + || CKSGN_F (__real__ (__builtin_##FUNC##f(ARG0, ARG1)), __real__ (RES)) \ + || (__imag__ (RES) != 0 \ + && CKSGN_F (__imag__ (__builtin_##FUNC##f(ARG0, ARG1)), __imag__ (RES)))) \ + link_error(__LINE__, VAL_NUM); \ + if (COMPLEX_DIFF1PCT (__builtin_##FUNC(ARG0, ARG1), (RES)) \ + || CKSGN (__real__ (__builtin_##FUNC(ARG0, ARG1)), __real__ (RES)) \ + || (__imag__ (RES) != 0 \ + && CKSGN (__imag__ (__builtin_##FUNC(ARG0, ARG1)), __imag__ (RES)))) \ + link_error(__LINE__, VAL_NUM); \ + if (COMPLEX_DIFF1PCT_L (__builtin_##FUNC##l(ARG0, ARG1), (RES)) \ + || CKSGN_L (__real__ (__builtin_##FUNC##l(ARG0, ARG1)), __real__ (RES)) \ + || (__imag__ (RES) != 0 \ + && CKSGN_L (__imag__ (__builtin_##FUNC##l(ARG0, ARG1)), __imag__ (RES)))) \ + link_error(__LINE__, VAL_NUM); \ + } while (0) + +/* For complex numbers, call the TESTIT_COMPLEX_R2_ISZ macro for all combinations of neg and conj. */ #define TESTIT_COMPLEX_R2_ALLNEG(FUNC, ARG0, ARG1, RES1, RES2, RES3, RES4, RES5,\ RES6, RES7, RES8, RES9, RES10, RES11, RES12, RES13, RES14, RES15, RES16) do{ \ - TESTIT_COMPLEX_R2(1, FUNC, (_Complex float)(ARG0),(_Complex float)(ARG1), RES1);\ - TESTIT_COMPLEX_R2(2, FUNC, (_Complex float)(ARG0),CONJ(ARG1), RES2); \ - TESTIT_COMPLEX_R2(3, FUNC, (_Complex float)(ARG0),-(_Complex float)(ARG1), RES3); \ - TESTIT_COMPLEX_R2(4, FUNC, (_Complex float)(ARG0),-CONJ(ARG1), RES4); \ - TESTIT_COMPLEX_R2(5, FUNC, -(_Complex float)(ARG0),(_Complex float)(ARG1), RES5); \ - TESTIT_COMPLEX_R2(6, FUNC, -(_Complex float)(ARG0),CONJ(ARG1), RES6); \ - TESTIT_COMPLEX_R2(7, FUNC, -(_Complex float)(ARG0),-(_Complex float)(ARG1), RES7); \ - TESTIT_COMPLEX_R2(8, FUNC, -(_Complex float)(ARG0),-CONJ(ARG1), RES8); \ - TESTIT_COMPLEX_R2(9, FUNC, CONJ(ARG0),(_Complex float)(ARG1), RES9); \ - TESTIT_COMPLEX_R2(10, FUNC, CONJ(ARG0),CONJ(ARG1), RES10); \ - TESTIT_COMPLEX_R2(11, FUNC, CONJ(ARG0),-(_Complex float)(ARG1), RES11); \ - TESTIT_COMPLEX_R2(12, FUNC, CONJ(ARG0),-CONJ(ARG1), RES12); \ - TESTIT_COMPLEX_R2(13, FUNC, -CONJ(ARG0),(_Complex float)(ARG1), RES13); \ - TESTIT_COMPLEX_R2(14, FUNC, -CONJ(ARG0),CONJ(ARG1), RES14); \ - TESTIT_COMPLEX_R2(15, FUNC, -CONJ(ARG0),-(_Complex float)(ARG1), RES15); \ - TESTIT_COMPLEX_R2(16, FUNC, -CONJ(ARG0),-CONJ(ARG1), RES16); \ + TESTIT_COMPLEX_R2_ISZ(1, FUNC, (_Complex float)(ARG0),(_Complex float)(ARG1), RES1);\ + TESTIT_COMPLEX_R2_ISZ(2, FUNC, (_Complex float)(ARG0),CONJ(ARG1), RES2); \ + TESTIT_COMPLEX_R2_ISZ(3, FUNC, (_Complex float)(ARG0),-(_Complex float)(ARG1), RES3); \ + TESTIT_COMPLEX_R2_ISZ(4, FUNC, (_Complex float)(ARG0),-CONJ(ARG1), RES4); \ + TESTIT_COMPLEX_R2_ISZ(5, FUNC, -(_Complex float)(ARG0),(_Complex float)(ARG1), RES5); \ + TESTIT_COMPLEX_R2_ISZ(6, FUNC, -(_Complex float)(ARG0),CONJ(ARG1), RES6); \ + TESTIT_COMPLEX_R2_ISZ(7, FUNC, -(_Complex float)(ARG0),-(_Complex float)(ARG1), RES7); \ + TESTIT_COMPLEX_R2_ISZ(8, FUNC, -(_Complex float)(ARG0),-CONJ(ARG1), RES8); \ + TESTIT_COMPLEX_R2_ISZ(9, FUNC, CONJ(ARG0),(_Complex float)(ARG1), RES9); \ + TESTIT_COMPLEX_R2_ISZ(10, FUNC, CONJ(ARG0),CONJ(ARG1), RES10); \ + TESTIT_COMPLEX_R2_ISZ(11, FUNC, CONJ(ARG0),-(_Complex float)(ARG1), RES11); \ + TESTIT_COMPLEX_R2_ISZ(12, FUNC, CONJ(ARG0),-CONJ(ARG1), RES12); \ + TESTIT_COMPLEX_R2_ISZ(13, FUNC, -CONJ(ARG0),(_Complex float)(ARG1), RES13); \ + TESTIT_COMPLEX_R2_ISZ(14, FUNC, -CONJ(ARG0),CONJ(ARG1), RES14); \ + TESTIT_COMPLEX_R2_ISZ(15, FUNC, -CONJ(ARG0),-(_Complex float)(ARG1), RES15); \ + TESTIT_COMPLEX_R2_ISZ(16, FUNC, -CONJ(ARG0),-CONJ(ARG1), RES16); \ } while (0) int main (void)
