1156cd587Sjoerg //===-- lib/subsf3.c - Single-precision subtraction ---------------*- C -*-===// 2156cd587Sjoerg // 3156cd587Sjoerg // The LLVM Compiler Infrastructure 4156cd587Sjoerg // 5156cd587Sjoerg // This file is dual licensed under the MIT and the University of Illinois Open 6156cd587Sjoerg // Source Licenses. See LICENSE.TXT for details. 7156cd587Sjoerg // 8156cd587Sjoerg //===----------------------------------------------------------------------===// 9156cd587Sjoerg // 10156cd587Sjoerg // This file implements single-precision soft-float subtraction with the 11156cd587Sjoerg // IEEE-754 default rounding (to nearest, ties to even). 12156cd587Sjoerg // 13156cd587Sjoerg //===----------------------------------------------------------------------===// 14156cd587Sjoerg 15156cd587Sjoerg #define SINGLE_PRECISION 16156cd587Sjoerg #include "fp_lib.h" 17156cd587Sjoerg 18156cd587Sjoerg // Subtraction; flip the sign bit of b and add. 19156cd587Sjoerg COMPILER_RT_ABI fp_t __subsf3(fp_t a,fp_t b)20156cd587Sjoerg__subsf3(fp_t a, fp_t b) { 21156cd587Sjoerg return __addsf3(a, fromRep(toRep(b) ^ signBit)); 22156cd587Sjoerg } 23156cd587Sjoerg 243044ee7eSrin #if defined(__ARM_EABI__) 25*d3143459Srin #if defined(COMPILER_RT_ARMHF_TARGET) __aeabi_fsub(fp_t a,fp_t b)263044ee7eSrinAEABI_RTABI fp_t __aeabi_fsub(fp_t a, fp_t b) { 273044ee7eSrin return __subsf3(a, b); 283044ee7eSrin } 29*d3143459Srin #else 30*d3143459Srin AEABI_RTABI fp_t __aeabi_fsub(fp_t a, fp_t b) COMPILER_RT_ALIAS(__subsf3); 313044ee7eSrin #endif 32*d3143459Srin #endif 33