comparetf2.c revision 1.1.1.2
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_128BIT) && defined(CRT_LDBL_128BIT) 43#include "fp_compare_impl.inc" 44 45COMPILER_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 49COMPILER_RT_ALIAS(__letf2, __cmptf2) 50#endif 51COMPILER_RT_ALIAS(__letf2, __eqtf2) 52COMPILER_RT_ALIAS(__letf2, __lttf2) 53COMPILER_RT_ALIAS(__letf2, __netf2) 54 55COMPILER_RT_ABI CMP_RESULT __getf2(fp_t a, fp_t b) { return __geXf2__(a, b); } 56 57COMPILER_RT_ALIAS(__getf2, __gttf2) 58 59COMPILER_RT_ABI CMP_RESULT __unordtf2(fp_t a, fp_t b) { 60 return __unordXf2__(a, b); 61} 62 63#endif 64