31 lines
971 B
C
31 lines
971 B
C
/* clang-format off */
|
|
//===-- lib/subtf3.c - Quad-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 quad-precision soft-float subtraction with the
|
|
// IEEE-754 default rounding (to nearest, ties to even).
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
STATIC_YOINK("huge_compiler_rt_license");
|
|
|
|
#define QUAD_PRECISION
|
|
#include "third_party/compiler_rt/fp_lib.inc"
|
|
|
|
#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
|