diff options
| -rw-r--r-- | sysdeps/x86/fpu/sfp-exceptions.c | 57 | ||||
| -rw-r--r-- | sysdeps/x86_64/fpu/Makefile | 4 |
2 files changed, 60 insertions, 1 deletions
diff --git a/sysdeps/x86/fpu/sfp-exceptions.c b/sysdeps/x86/fpu/sfp-exceptions.c new file mode 100644 index 0000000000..74ce0716e2 --- /dev/null +++ b/sysdeps/x86/fpu/sfp-exceptions.c @@ -0,0 +1,57 @@ +/* x86_64 soft-fp exception handling for _Float128. + Copyright (C) 2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <fenv.h> +#include <float.h> +#include <math-barriers.h> +#include <soft-fp.h> + +void +__sfp_handle_exceptions (int _fex) +{ + if (_fex & FP_EX_INVALID) + { + float f = 0.0f; + math_force_eval (f / f); + } + if (_fex & FP_EX_DENORM) + { + float f = FLT_MIN, g = 2.0f; + math_force_eval (f / g); + } + if (_fex & FP_EX_DIVZERO) + { + float f = 1.0f, g = 0.0f; + math_force_eval (f / g); + } + if (_fex & FP_EX_OVERFLOW) + { + float force_underflow = FLT_MAX * FLT_MAX; + math_force_eval (force_underflow); + } + if (_fex & FP_EX_UNDERFLOW) + { + float force_overflow = FLT_MIN * FLT_MIN; + math_force_eval (force_overflow); + } + if (_fex & FP_EX_INEXACT) + { + float f = 1.0f, g = 3.0f; + math_force_eval (f / g); + } +} diff --git a/sysdeps/x86_64/fpu/Makefile b/sysdeps/x86_64/fpu/Makefile index a4ff2723a8..a95e3f74f4 100644 --- a/sysdeps/x86_64/fpu/Makefile +++ b/sysdeps/x86_64/fpu/Makefile @@ -23,8 +23,10 @@ libmvec-support += svml_d_cos2_core svml_d_cos4_core_avx \ svml_s_sincosf8_core svml_s_sincosf16_core endif -# Variables for libmvec tests. ifeq ($(subdir),math) +libm-routines += sfp-exceptions + +# Variables for libmvec tests. ifeq ($(build-mathvec),yes) libmvec-tests += double-vlen2 double-vlen4 double-vlen4-avx2 \ float-vlen4 float-vlen8 float-vlen8-avx2 |