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