forked from OSchip/llvm-project
30 lines
885 B
C
30 lines
885 B
C
//===-- lib/adddf3.c - Double-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 double-precision soft-float subtraction with the
|
|
// IEEE-754 default rounding (to nearest, ties to even).
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DOUBLE_PRECISION
|
|
#include "fp_lib.h"
|
|
|
|
fp_t COMPILER_RT_ABI __adddf3(fp_t a, fp_t b);
|
|
|
|
|
|
ARM_EABI_FNALIAS(dsub, subdf3);
|
|
|
|
// Subtraction; flip the sign bit of b and add.
|
|
COMPILER_RT_ABI fp_t
|
|
__subdf3(fp_t a, fp_t b) {
|
|
return __adddf3(a, fromRep(toRep(b) ^ signBit));
|
|
}
|
|
|
|
/* FIXME: rsub for ARM EABI */
|