File: log.cl

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llvm-toolchain-11 1%3A11.0.1-2
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#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