llvm-project

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//===-- lib/comparesf2.c - Single-precision comparisons -----------*- C -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the following soft-fp_t comparison routines:
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//
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//   __eqsf2   __gesf2   __unordsf2
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//   __lesf2   __gtsf2
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//   __ltsf2
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//   __nesf2
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//
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// The semantics of the routines grouped in each column are identical, so there
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// is a single implementation for each, and wrappers to provide the other names.
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//
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// The main routines behave as follows:
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//
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//   __lesf2(a,b) returns -1 if a < b
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//                         0 if a == b
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//                         1 if a > b
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//                         1 if either a or b is NaN
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//
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//   __gesf2(a,b) returns -1 if a < b
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//                         0 if a == b
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//                         1 if a > b
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//                        -1 if either a or b is NaN
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//
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//   __unordsf2(a,b) returns 0 if both a and b are numbers
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//                           1 if either a or b is NaN
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//
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// Note that __lesf2( ) and __gesf2( ) are identical except in their handling of
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// NaN values.
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//
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//===----------------------------------------------------------------------===//
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#define SINGLE_PRECISION
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#include "fp_lib.h"
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#include "fp_compare_impl.inc"
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COMPILER_RT_ABI CMP_RESULT __lesf2(fp_t a, fp_t b) { return __leXf2__(a, b); }
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#if defined(__ELF__)
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// Alias for libgcc compatibility
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COMPILER_RT_ALIAS(__lesf2, __cmpsf2)
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#endif
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COMPILER_RT_ALIAS(__lesf2, __eqsf2)
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COMPILER_RT_ALIAS(__lesf2, __ltsf2)
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COMPILER_RT_ALIAS(__lesf2, __nesf2)
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COMPILER_RT_ABI CMP_RESULT __gesf2(fp_t a, fp_t b) { return __geXf2__(a, b); }
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COMPILER_RT_ALIAS(__gesf2, __gtsf2)
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COMPILER_RT_ABI CMP_RESULT __unordsf2(fp_t a, fp_t b) {
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  return __unordXf2__(a, b);
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}
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#if defined(__ARM_EABI__)
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#if defined(COMPILER_RT_ARMHF_TARGET)
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AEABI_RTABI int __aeabi_fcmpun(fp_t a, fp_t b) { return __unordsf2(a, b); }
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#else
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COMPILER_RT_ALIAS(__unordsf2, __aeabi_fcmpun)
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#endif
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#endif
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#if defined(_WIN32) && !defined(__MINGW32__)
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// The alias mechanism doesn't work on Windows except for MinGW, so emit
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// wrapper functions.
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int __eqsf2(fp_t a, fp_t b) { return __lesf2(a, b); }
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int __ltsf2(fp_t a, fp_t b) { return __lesf2(a, b); }
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int __nesf2(fp_t a, fp_t b) { return __lesf2(a, b); }
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int __gtsf2(fp_t a, fp_t b) { return __gesf2(a, b); }
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#endif
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