| //===-- lib/comparedf2.c - Double-precision comparisons -----------*- C -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // // This file implements the following soft-float comparison routines: |
| // |
| // __eqdf2 __gedf2 __unorddf2 |
| // __ledf2 __gtdf2 |
| // __ltdf2 |
| // __nedf2 |
| // |
| // The semantics of the routines grouped in each column are identical, so there |
| // is a single implementation for each, and wrappers to provide the other names. |
| // |
| // The main routines behave as follows: |
| // |
| // __ledf2(a,b) returns -1 if a < b |
| // 0 if a == b |
| // 1 if a > b |
| // 1 if either a or b is NaN |
| // |
| // __gedf2(a,b) returns -1 if a < b |
| // 0 if a == b |
| // 1 if a > b |
| // -1 if either a or b is NaN |
| // |
| // __unorddf2(a,b) returns 0 if both a and b are numbers |
| // 1 if either a or b is NaN |
| // |
| // Note that __ledf2( ) and __gedf2( ) are identical except in their handling of |
| // NaN values. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #define DOUBLE_PRECISION |
| #include "fp_lib.h" |
| |
| #include "fp_compare_impl.inc" |
| |
| COMPILER_RT_ABI CMP_RESULT __ledf2(fp_t a, fp_t b) { return __leXf2__(a, b); } |
| |
| #if defined(__ELF__) |
| // Alias for libgcc compatibility |
| COMPILER_RT_ALIAS(__ledf2, __cmpdf2) |
| #endif |
| COMPILER_RT_ALIAS(__ledf2, __eqdf2) |
| COMPILER_RT_ALIAS(__ledf2, __ltdf2) |
| COMPILER_RT_ALIAS(__ledf2, __nedf2) |
| |
| COMPILER_RT_ABI CMP_RESULT __gedf2(fp_t a, fp_t b) { return __geXf2__(a, b); } |
| |
| COMPILER_RT_ALIAS(__gedf2, __gtdf2) |
| |
| COMPILER_RT_ABI CMP_RESULT __unorddf2(fp_t a, fp_t b) { |
| return __unordXf2__(a, b); |
| } |
| |
| #if defined(__ARM_EABI__) |
| #if defined(COMPILER_RT_ARMHF_TARGET) |
| AEABI_RTABI int __aeabi_dcmpun(fp_t a, fp_t b) { return __unorddf2(a, b); } |
| #else |
| COMPILER_RT_ALIAS(__unorddf2, __aeabi_dcmpun) |
| #endif |
| #endif |
| |
| #if defined(_WIN32) && !defined(__MINGW32__) |
| // The alias mechanism doesn't work on Windows except for MinGW, so emit |
| // wrapper functions. |
| int __eqdf2(fp_t a, fp_t b) { return __ledf2(a, b); } |
| int __ltdf2(fp_t a, fp_t b) { return __ledf2(a, b); } |
| int __nedf2(fp_t a, fp_t b) { return __ledf2(a, b); } |
| int __gtdf2(fp_t a, fp_t b) { return __gedf2(a, b); } |
| #endif |
