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