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- //===-- 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).
- //
- //===----------------------------------------------------------------------===//
- #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
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