/*

  * LIBOIL - Library of Optimized Inner Loops

  * Copyright (c) 2003,2004,2005 David A. Schleef <ds@schleef.org>

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met:

  * 1. Redistributions of source code must retain the above copyright

  *    notice, this list of conditions and the following disclaimer.

  * 2. Redistributions in binary form must reproduce the above copyright

  *    notice, this list of conditions and the following disclaimer in the

  *    documentation and/or other materials provided with the distribution.

  * 

  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,

  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

  * POSSIBILITY OF SUCH DAMAGE.

  */

 #ifndef _LIBOIL_RANDOM_H_

 #define _LIBOIL_RANDOM_H_

 #include <liboil/liboilutils.h>

 #include <liboil/liboiltypes.h>

 #include <stdlib.h>

 OIL_BEGIN_DECLS

 #ifdef OIL_ENABLE_UNSTABLE_API

 IMPORT_C void oil_random_s32(oil_type_s32 *dest, int n);

 IMPORT_C void oil_random_s64 (oil_type_s64 *dest, int n);

 IMPORT_C void oil_random_s16 (oil_type_s16 *dest, int n);

 IMPORT_C void oil_random_s8 (oil_type_s8 *dest, int n);

 IMPORT_C void oil_random_u32 (oil_type_u32 *dest, int n);

 IMPORT_C void oil_random_u64 (oil_type_u64 *dest, int n);

 IMPORT_C void oil_random_u16 (oil_type_u16 *dest, int n);

 IMPORT_C void oil_random_u8 (oil_type_u8 *dest, int n);

 IMPORT_C void oil_random_f64 (oil_type_f64 *dest, int n);

 IMPORT_C void oil_random_f32 (oil_type_f32 *dest, int n);

 IMPORT_C void oil_random_argb (oil_type_u32 *dest, int n);

 IMPORT_C void oil_random_alpha (oil_type_u8 *dest, int n);

 /**

  * oil_rand_s32:

  *

  * Evaluates to a random integer in the range [-(1<<31), (1<<31)-1].

  */

 #define oil_rand_s32() ((rand()&0xffff)<<16 | (rand()&0xffff))

 /**

  * oil_rand_s64:

  *

  * Evaluates to a random integer in the range [-(1<<63), (1<<63)-1].

  */

 #define oil_rand_s64() ((int64_t)(oil_rand_s32())<<32 | oil_rand_s32())

 /**

  * oil_rand_s16:

  *

  * Evaluates to a random integer in the range [-(1<<15), (1<<15)-1].

  */

 #define oil_rand_s16() ((int16_t)(rand()&0xffff))

 /**

  * oil_rand_s8:

  *

  * Evaluates to a random integer in the range [-(1<<7), (1<<7)-1].

  */

 #define oil_rand_s8() ((int8_t)(rand()&0xffff))

 /**

  * oil_rand_u32:

  *

  * Evaluates to a random integer in the range [0, (1<<32)-1].

  */

 #define oil_rand_u32() ((uint32_t)((rand()&0xffff)<<16 | (rand()&0xffff)))

 /**

  * oil_rand_u64:

  *

  * Evaluates to a random integer in the range [0, (1<<64)-1].

  */

 #define oil_rand_u64() ((uint64_t)(oil_rand_u32())<<32 | oil_rand_u32())

 /**

  * oil_rand_u16:

  *

  * Evaluates to a random integer in the range [0, (1<<16)-1].

  */

 #define oil_rand_u16() ((uint16_t)(rand()&0xffff))

 /**

  * oil_rand_u8:

  *

  * Evaluates to a random integer in the range [0, (1<<8)-1].

  */

 #define oil_rand_u8() ((uint8_t)(rand()&0xffff))

 /**

  * oil_rand_f64:

  *

  * Evaluates to a random double-precision floating point number

  * in the range [0, 1.0).

  */

 #define oil_rand_f64() (((rand()/(RAND_MAX+1.0))+rand())/(RAND_MAX+1.0))

 /**

  * oil_rand_f32:

  *

  * Evaluates to a random single-precision floating point number

  * in the range [0, 1.0).

  */

 #define oil_rand_f32() (rand()/(RAND_MAX+1.0))

 #endif

 OIL_END_DECLS

 #endif