| //===-- 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 |
