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9ce4ac64b2
Various fmax and fmin function implementations mishandle sNaN arguments: (a) When both arguments are NaNs, the return value should be a qNaN, but sometimes it is an sNaN if at least one argument is an sNaN. (b) Under TS 18661-1 semantics, if either argument is an sNaN then the result should be a qNaN (whereas if one argument is a qNaN and the other is not a NaN, the result should be the non-NaN argument). Various implementations treat sNaNs like qNaNs here. This patch fixes the powerpc versions of these functions (shared by float and double, 32-bit and 64-bit). The structure of those versions is that all ordered cases are already handled before anything dealing with the case where the arguments are unordered; thus, this patch causes no change to the code executed in the common case (neither argument a NaN). Tested for powerpc (32-bit and 64-bit), together with tests to be added along with the x86_64 / x86 fixes. [BZ #20947] * sysdeps/powerpc/fpu/s_fmax.S (__fmax): Add the arguments when either is a signaling NaN. * sysdeps/powerpc/fpu/s_fmin.S (__fmin): Likewise. |
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| .. | ||
| e_hypot.c | ||
| e_hypotf.c | ||
| e_rem_pio2f.c | ||
| e_sqrt.c | ||
| e_sqrtf.c | ||
| fclrexcpt.c | ||
| fe_mask.c | ||
| fe_nomask.c | ||
| fedisblxcpt.c | ||
| feenablxcpt.c | ||
| fegetenv.c | ||
| fegetexcept.c | ||
| fegetmode.c | ||
| fegetround.c | ||
| feholdexcpt.c | ||
| fenv_const.c | ||
| fenv_libc.h | ||
| fenv_private.h | ||
| fesetenv.c | ||
| fesetexcept.c | ||
| fesetmode.c | ||
| fesetround.c | ||
| feupdateenv.c | ||
| fgetexcptflg.c | ||
| fix-fp-int-compare-invalid.h | ||
| fraiseexcpt.c | ||
| fsetexcptflg.c | ||
| ftestexcept.c | ||
| k_cosf.c | ||
| k_rem_pio2f.c | ||
| k_sinf.c | ||
| libm-test-ulps | ||
| libm-test-ulps-name | ||
| Makefile | ||
| math_ldbl.h | ||
| math_private.h | ||
| s_cosf.c | ||
| s_fabs.S | ||
| s_fabsf.S | ||
| s_float_bitwise.h | ||
| s_fma.S | ||
| s_fmaf.S | ||
| s_fmax.S | ||
| s_fmaxf.S | ||
| s_fmin.S | ||
| s_fminf.S | ||
| s_isnan.c | ||
| s_isnanf.S | ||
| s_lrintf.S | ||
| s_rint.c | ||
| s_rintf.c | ||
| s_sinf.c | ||
| t_sqrt.c | ||
| tst-setcontext-fpscr.c | ||