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Fix double implementation of log 

We need to use M_LOG2E instead of M_LOG2E_F.

llvm-svn: 243132
This commit is contained in:
Tom Stellard 2015-07-24 18:07:14 +00:00
parent 44b6117dfd
commit 7a09e88b6e
4 changed files with 73 additions and 3 deletions
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26
libclc/generic/include/clc/math/log.h
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@ -1,4 +1,24 @@
#undef log
/*
* Copyright (c) 2015 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// log(x) = log2(x) * (1/log2(e))
#define log(val) (log2(val) * 0.693147181f)
#define __CLC_BODY <clc/math/log.inc>
#include <clc/math/gentype.inc>

23
libclc/generic/include/clc/math/log.inc Normal file
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@ -0,0 +1,23 @@
/*
* Copyright (c) 2015 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE log(__CLC_GENTYPE a);

1
libclc/generic/lib/SOURCES
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@ -91,6 +91,7 @@ math/half_sqrt.cl
math/hypot.cl
math/clc_ldexp.cl
math/ldexp.cl
math/log.cl
math/log10.cl
math/log1p.cl
math/log2.cl

26
libclc/generic/lib/math/log.cl Normal file
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@ -0,0 +1,26 @@
#include <clc/clc.h>
#include "../clcmacro.h"
/*
*log(x) = log2(x) * (1/log2(e))
*/
_CLC_OVERLOAD _CLC_DEF float log(float x)
{
return log2(x) * (1.0f / M_LOG2E_F);
}
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, log, float);
#ifdef cl_khr_fp64
#pragma OPENCL EXTENSION cl_khr_fp64 : enable
_CLC_OVERLOAD _CLC_DEF double log(double x)
{
return log2(x) * (1.0 / M_LOG2E);
}
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, log, double);
#endif // cl_khr_fp64