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| author | Zong Li <zongbox@gmail.com> | 2018-11-30 17:18:20 +0800 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2020-01-16 14:10:37 -0800 |
| commit | 8a49560fb7257a427062ca24f9d07115a7b729f6 (patch) | |
| tree | 6dc481a591cea409214cb6e7bbc232d3a5eba5d1 | |
| parent | 1501294ef307fe6dbe6a5d9259d9e8d796abff2f (diff) | |
| download | glibc-8a49560fb7257a427062ca24f9d07115a7b729f6.tar.gz glibc-8a49560fb7257a427062ca24f9d07115a7b729f6.tar.xz glibc-8a49560fb7257a427062ca24f9d07115a7b729f6.zip | |
RISC-V: Fix llrint and llround missing exceptions on RV32
Similar to the fix for MIPS, ARM and S/390, RV32 is missing correct exception on overflow from llrint and llround functions because cast from floating-point types to long long do not result in correct exceptions on overflow.
| -rw-r--r-- | sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h b/sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h new file mode 100644 index 0000000000..9137ee0fd8 --- /dev/null +++ b/sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h @@ -0,0 +1,38 @@ +/* Fix for conversion of floating point to integer overflow. RISC-V version. + Copyright (C) 2015-2020 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef FIX_FP_INT_CONVERT_OVERFLOW_H +#define FIX_FP_INT_CONVERT_OVERFLOW_H 1 + +/* The generic libgcc2.c conversions from floating point + to long long may not raise the correct exceptions on overflow (and + may raise spurious "inexact" exceptions even in non-overflow cases, + see <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59412>). */ +#define FIX_FLT_LONG_CONVERT_OVERFLOW 0 +#define FIX_FLT_LLONG_CONVERT_OVERFLOW 1 + +#define FIX_DBL_LONG_CONVERT_OVERFLOW 0 +#define FIX_DBL_LLONG_CONVERT_OVERFLOW 1 + +#define FIX_LDBL_LONG_CONVERT_OVERFLOW 0 +#define FIX_LDBL_LLONG_CONVERT_OVERFLOW 0 + +#define FIX_FLT128_LONG_CONVERT_OVERFLOW 0 +#define FIX_FLT128_LLONG_CONVERT_OVERFLOW 0 + +#endif /* fix-fp-int-convert-overflow.h */ |