| //===-- lib/adddf3.c - Double-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 double-precision soft-float subtraction with the |
| // IEEE-754 default rounding (to nearest, ties to even). |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #define DOUBLE_PRECISION |
| #include "fp_lib.h" |
| |
| // Subtraction; flip the sign bit of b and add. |
| COMPILER_RT_ABI fp_t |
| __subdf3(fp_t a, fp_t b) { |
| return __adddf3(a, fromRep(toRep(b) ^ signBit)); |
| } |
| |
| #if defined(__ARM_EABI__) |
| #if defined(COMPILER_RT_ARMHF_TARGET) |
| AEABI_RTABI fp_t __aeabi_dsub(fp_t a, fp_t b) { |
| return __subdf3(a, b); |
| } |
| #else |
| AEABI_RTABI fp_t __aeabi_dsub(fp_t a, fp_t b) COMPILER_RT_ALIAS(__subdf3); |
| #endif |
| #endif |
