25 lines
825 B
C
25 lines
825 B
C
//===-- lib/subtf3.c - Quad-precision subtraction -----------------*- C -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements quad-precision soft-float subtraction.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define QUAD_PRECISION
|
|
#include "fp_lib.h"
|
|
|
|
#if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT)
|
|
COMPILER_RT_ABI fp_t __addtf3(fp_t a, fp_t b);
|
|
|
|
// Subtraction; flip the sign bit of b and add.
|
|
COMPILER_RT_ABI fp_t __subtf3(fp_t a, fp_t b) {
|
|
return __addtf3(a, fromRep(toRep(b) ^ signBit));
|
|
}
|
|
|
|
#endif
|