diff options
Diffstat (limited to 'contrib/compiler-rt/lib/subsf3.c')
| -rw-r--r-- | contrib/compiler-rt/lib/subsf3.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/subsf3.c b/contrib/compiler-rt/lib/subsf3.c new file mode 100644 index 0000000..625376a --- /dev/null +++ b/contrib/compiler-rt/lib/subsf3.c @@ -0,0 +1,29 @@ +//===-- lib/subsf3.c - Single-precision subtraction ---------------*- C -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file implements single-precision soft-float subtraction with the +// IEEE-754 default rounding (to nearest, ties to even). +// +//===----------------------------------------------------------------------===// +#include "abi.h" + +#define SINGLE_PRECISION +#include "fp_lib.h" + +fp_t COMPILER_RT_ABI __addsf3(fp_t a, fp_t b); + +ARM_EABI_FNALIAS(fsub, subsf3); + +// Subtraction; flip the sign bit of b and add. +COMPILER_RT_ABI fp_t +__subsf3(fp_t a, fp_t b) { + return __addsf3(a, fromRep(toRep(b) ^ signBit)); +} + +/* FIXME: rsub for ARM EABI */ |
