author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 16:46:38 +0300 | |
changeset 18 | 47c74d1534e1 |
permissions | -rw-r--r-- |
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/* |
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* LIBOIL - Library of Optimized Inner Loops |
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* Copyright (c) 2003,2004,2005 David A. Schleef <ds@schleef.org> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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|
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#ifndef _LIBOIL_RANDOM_H_ |
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#define _LIBOIL_RANDOM_H_ |
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#include <liboil/liboilutils.h> |
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#include <liboil/liboiltypes.h> |
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#include <stdlib.h> |
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OIL_BEGIN_DECLS |
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|
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#ifdef OIL_ENABLE_UNSTABLE_API |
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IMPORT_C void oil_random_s32(oil_type_s32 *dest, int n); |
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IMPORT_C void oil_random_s64 (oil_type_s64 *dest, int n); |
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IMPORT_C void oil_random_s16 (oil_type_s16 *dest, int n); |
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IMPORT_C void oil_random_s8 (oil_type_s8 *dest, int n); |
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IMPORT_C void oil_random_u32 (oil_type_u32 *dest, int n); |
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IMPORT_C void oil_random_u64 (oil_type_u64 *dest, int n); |
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IMPORT_C void oil_random_u16 (oil_type_u16 *dest, int n); |
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IMPORT_C void oil_random_u8 (oil_type_u8 *dest, int n); |
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IMPORT_C void oil_random_f64 (oil_type_f64 *dest, int n); |
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IMPORT_C void oil_random_f32 (oil_type_f32 *dest, int n); |
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IMPORT_C void oil_random_argb (oil_type_u32 *dest, int n); |
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IMPORT_C void oil_random_alpha (oil_type_u8 *dest, int n); |
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|
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/** |
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* oil_rand_s32: |
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* |
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* Evaluates to a random integer in the range [-(1<<31), (1<<31)-1]. |
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*/ |
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#define oil_rand_s32() ((rand()&0xffff)<<16 | (rand()&0xffff)) |
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/** |
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* oil_rand_s64: |
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* |
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* Evaluates to a random integer in the range [-(1<<63), (1<<63)-1]. |
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*/ |
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#define oil_rand_s64() ((int64_t)(oil_rand_s32())<<32 | oil_rand_s32()) |
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/** |
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* oil_rand_s16: |
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* |
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* Evaluates to a random integer in the range [-(1<<15), (1<<15)-1]. |
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*/ |
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#define oil_rand_s16() ((int16_t)(rand()&0xffff)) |
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/** |
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* oil_rand_s8: |
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* |
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* Evaluates to a random integer in the range [-(1<<7), (1<<7)-1]. |
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*/ |
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#define oil_rand_s8() ((int8_t)(rand()&0xffff)) |
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/** |
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* oil_rand_u32: |
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* |
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* Evaluates to a random integer in the range [0, (1<<32)-1]. |
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*/ |
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#define oil_rand_u32() ((uint32_t)((rand()&0xffff)<<16 | (rand()&0xffff))) |
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/** |
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* oil_rand_u64: |
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* |
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* Evaluates to a random integer in the range [0, (1<<64)-1]. |
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*/ |
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#define oil_rand_u64() ((uint64_t)(oil_rand_u32())<<32 | oil_rand_u32()) |
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/** |
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* oil_rand_u16: |
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* |
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* Evaluates to a random integer in the range [0, (1<<16)-1]. |
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*/ |
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#define oil_rand_u16() ((uint16_t)(rand()&0xffff)) |
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/** |
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* oil_rand_u8: |
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* |
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* Evaluates to a random integer in the range [0, (1<<8)-1]. |
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*/ |
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#define oil_rand_u8() ((uint8_t)(rand()&0xffff)) |
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/** |
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* oil_rand_f64: |
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* |
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* Evaluates to a random double-precision floating point number |
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* in the range [0, 1.0). |
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*/ |
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#define oil_rand_f64() (((rand()/(RAND_MAX+1.0))+rand())/(RAND_MAX+1.0)) |
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/** |
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* oil_rand_f32: |
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* |
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* Evaluates to a random single-precision floating point number |
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* in the range [0, 1.0). |
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*/ |
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#define oil_rand_f32() (rand()/(RAND_MAX+1.0)) |
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#endif |
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OIL_END_DECLS |
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#endif |
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