diff options
Diffstat (limited to 'libclc/generic/lib/geometric/fast_normalize.inc')
-rw-r--r-- | libclc/generic/lib/geometric/fast_normalize.inc | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libclc/generic/lib/geometric/fast_normalize.inc b/libclc/generic/lib/geometric/fast_normalize.inc new file mode 100644 index 0000000..c1be2b8 --- /dev/null +++ b/libclc/generic/lib/geometric/fast_normalize.inc @@ -0,0 +1,31 @@ +/* + * Copyright (c) 2014,2015 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. + */ + +#ifndef __CLC_SCALAR + +// Only handle vector implementations +_CLC_OVERLOAD _CLC_DEF __CLC_FLOATN fast_normalize(__CLC_FLOATN p) { + __CLC_FLOAT l2 = dot(p, p); + return l2 == 0.0f ? p : p * half_rsqrt(l2); +} + +#endif |