29 lines
456 B
C
29 lines
456 B
C
#include <common.h>
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#include <stdlib.h>
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static unsigned int random_seed;
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#if RAND_MAX > 32767
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#error this rand implementation is for RAND_MAX < 32678 only.
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#endif
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unsigned int rand(void)
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{
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random_seed = random_seed * 1103515245 + 12345;
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return (random_seed / 65536) % (RAND_MAX + 1);
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}
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void srand(unsigned int seed)
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{
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random_seed = seed;
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}
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void get_random_bytes(void *_buf, int len)
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{
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char *buf = _buf;
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while (len--)
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*buf++ = rand() % 256;
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}
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