2011-03-22 07:30:19 +08:00
|
|
|
//===-- 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).
|
|
|
|
//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
#define SINGLE_PRECISION
|
|
|
|
#include "fp_lib.h"
|
|
|
|
|
|
|
|
// Subtraction; flip the sign bit of b and add.
|
2011-04-20 01:52:09 +08:00
|
|
|
COMPILER_RT_ABI fp_t
|
|
|
|
__subsf3(fp_t a, fp_t b) {
|
2011-03-22 07:30:19 +08:00
|
|
|
return __addsf3(a, fromRep(toRep(b) ^ signBit));
|
|
|
|
}
|
2011-04-20 01:51:24 +08:00
|
|
|
|
2017-05-17 00:41:37 +08:00
|
|
|
#if defined(__ARM_EABI__)
|
2017-10-04 05:25:07 +08:00
|
|
|
#if defined(COMPILER_RT_ARMHF_TARGET)
|
2017-05-17 00:41:37 +08:00
|
|
|
AEABI_RTABI fp_t __aeabi_fsub(fp_t a, fp_t b) {
|
|
|
|
return __subsf3(a, b);
|
|
|
|
}
|
2017-10-04 05:25:07 +08:00
|
|
|
#else
|
|
|
|
AEABI_RTABI fp_t __aeabi_fsub(fp_t a, fp_t b) COMPILER_RT_ALIAS(__subsf3);
|
|
|
|
#endif
|
2017-05-17 00:41:37 +08:00
|
|
|
#endif
|