1 //===-- lib/comparetf2.c - Quad-precision comparisons -------------*- C -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // // This file implements the following soft-float comparison routines: 10 // 11 // __eqtf2 __getf2 __unordtf2 12 // __letf2 __gttf2 13 // __lttf2 14 // __netf2 15 // 16 // The semantics of the routines grouped in each column are identical, so there 17 // is a single implementation for each, and wrappers to provide the other names. 18 // 19 // The main routines behave as follows: 20 // 21 // __letf2(a,b) returns -1 if a < b 22 // 0 if a == b 23 // 1 if a > b 24 // 1 if either a or b is NaN 25 // 26 // __getf2(a,b) returns -1 if a < b 27 // 0 if a == b 28 // 1 if a > b 29 // -1 if either a or b is NaN 30 // 31 // __unordtf2(a,b) returns 0 if both a and b are numbers 32 // 1 if either a or b is NaN 33 // 34 // Note that __letf2( ) and __getf2( ) are identical except in their handling of 35 // NaN values. 36 // 37 //===----------------------------------------------------------------------===// 38 39 #define QUAD_PRECISION 40 #include "fp_lib.h" 41 42 #if defined(CRT_HAS_TF_MODE) 43 #include "fp_compare_impl.inc" 44 45 COMPILER_RT_ABI CMP_RESULT __letf2(fp_t a, fp_t b) { return __leXf2__(a, b); } 46 47 #if defined(__ELF__) 48 // Alias for libgcc compatibility 49 COMPILER_RT_ALIAS(__letf2, __cmptf2) 50 #endif 51 COMPILER_RT_ALIAS(__letf2, __eqtf2) 52 COMPILER_RT_ALIAS(__letf2, __lttf2) 53 COMPILER_RT_ALIAS(__letf2, __netf2) 54 55 COMPILER_RT_ABI CMP_RESULT __getf2(fp_t a, fp_t b) { return __geXf2__(a, b); } 56 57 COMPILER_RT_ALIAS(__getf2, __gttf2) 58 59 COMPILER_RT_ABI CMP_RESULT __unordtf2(fp_t a, fp_t b) { 60 return __unordXf2__(a, b); 61 } 62 63 #endif 64