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Justine Tunney 2020-06-15 07:18:57 -07:00
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third_party/compiler_rt/subtf3.c vendored Normal file
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/* 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