[ti-machine-learning/ti-machine-learning.git] / src / common / util / timlUtilRandDiscreteUniformRNG.c
1 /******************************************************************************/
2 /*!
3 * \file timlUtilRandDiscreteUniformRNG.c
4 */
5 /* Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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10 *
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12 * notice, this list of conditions and the following disclaimer.
13 *
14 * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the
17 * distribution.
18 *
19 * Neither the name of Texas Instruments Incorporated nor the names of
20 * its contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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34 *
35 ******************************************************************************/
38 /*******************************************************************************
39 *
40 * INCLUDES
41 *
42 ******************************************************************************/
44 #include "../api/timl.h"
47 /******************************************************************************/
48 /**
49 * \ingroup util
50 * \brief Discrete uniform random number generator in [a, b]
51 * \param[in] a Lower bound
52 * \param[in] b Upper bound
53 * \return Random integer
54 */
55 /******************************************************************************/
57 int timlUtilRandDiscreteUniformRNG(int a, int b)
58 {
59 float x = (float)(rand())/RAND_MAX;
60 float y = a + (b - a)*x;
61 return roundf(y);
62 }