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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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#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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#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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* 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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