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-rw-r--r--r600/lib/math/sqrt.cl59
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diff --git a/r600/lib/math/sqrt.cl b/r600/lib/math/sqrt.cl
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-/*
- * 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.
- */
-
-#include <clc/clc.h>
-#include "../../../generic/lib/clcmacro.h"
-#include "math/clc_sqrt.h"
-
-_CLC_DEFINE_UNARY_BUILTIN(float, sqrt, __clc_sqrt, float)
-
-#ifdef cl_khr_fp64
-
-#pragma OPENCL EXTENSION cl_khr_fp64 : enable
-
-
-_CLC_OVERLOAD _CLC_DEF double sqrt(double x) {
-
- uint vcc = x < 0x1p-767;
- uint exp0 = vcc ? 0x100 : 0;
- unsigned exp1 = vcc ? 0xffffff80 : 0;
-
- double v01 = ldexp(x, exp0);
- double v23 = __builtin_amdgpu_rsq(v01);
- double v45 = v01 * v23;
- v23 = v23 * 0.5;
-
- double v67 = fma(-v23, v45, 0.5);
- v45 = fma(v45, v67, v45);
- double v89 = fma(-v45, v45, v01);
- v23 = fma(v23, v67, v23);
- v45 = fma(v89, v23, v45);
- v67 = fma(-v45, v45, v01);
- v23 = fma(v67, v23, v45);
-
- v23 = ldexp(v23, exp1);
- return ((x == __builtin_inf()) || (x == 0.0)) ? v01 : v23;
-}
-
-_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, sqrt, double);
-
-#endif