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/*
* Copyright (c) 2014 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.
*/
#include <clc/clc.h>
_CLC_OVERLOAD _CLC_DEF float length(float p) {
return fabs(p);
}
#define V_FLENGTH(p) \
float l2 = dot(p, p); \
\
if (l2 < FLT_MIN) { \
p *= 0x1.0p+86F; \
return sqrt(dot(p, p)) * 0x1.0p-86F; \
} else if (l2 == INFINITY) { \
p *= 0x1.0p-65F; \
return sqrt(dot(p, p)) * 0x1.0p+65F; \
} \
\
return sqrt(l2);
_CLC_OVERLOAD _CLC_DEF float length(float2 p) {
V_FLENGTH(p);
}
_CLC_OVERLOAD _CLC_DEF float length(float3 p) {
V_FLENGTH(p);
}
_CLC_OVERLOAD _CLC_DEF float length(float4 p) {
V_FLENGTH(p);
}
#ifdef cl_khr_fp64
#pragma OPENCL EXTENSION cl_khr_fp64 : enable
_CLC_OVERLOAD _CLC_DEF double length(double p){
return fabs(p);
}
#define V_DLENGTH(p) \
double l2 = dot(p, p); \
\
if (l2 < DBL_MIN) { \
p *= 0x1.0p+563; \
return sqrt(dot(p, p)) * 0x1.0p-563; \
} else if (l2 == INFINITY) { \
p *= 0x1.0p-513; \
return sqrt(dot(p, p)) * 0x1.0p+513; \
} \
\
return sqrt(l2);
_CLC_OVERLOAD _CLC_DEF double length(double2 p) {
V_DLENGTH(p);
}
_CLC_OVERLOAD _CLC_DEF double length(double3 p) {
V_DLENGTH(p);
}
_CLC_OVERLOAD _CLC_DEF double
length(double4 p) {
V_DLENGTH(p);
}
#endif
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