2ef5ec6b2b
Passing values less than 0 to the llvm.sqrt() intrinsic results in undefined behavior, so we need to check the input and return NaN if is is less than 0. v2: - Fix build failures. llvm-svn: 241906
39 lines
1.5 KiB
C++
39 lines
1.5 KiB
C++
/*
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* Copyright (c) 2014,2015 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#if __CLC_FPSIZE == 32
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#define __CLC_NAN NAN
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#define ZERO 0.0f
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#elif __CLC_FPSIZE == 64
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#define __CLC_NAN __builtin_nan("")
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#define ZERO 0.0
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#else
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#error "Invalid value for __CLC_FPSIZE"
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#endif
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_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE __clc_sqrt(__CLC_GENTYPE val) {
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return val < ZERO ? __CLC_NAN : __clc_llvm_intr_sqrt(val);
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}
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#undef __CLC_NAN
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#undef ZERO
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