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34 lines
794 B
C
34 lines
794 B
C
#ifndef _GOOMTOOLS_H
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#define _GOOMTOOLS_H
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/**
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* Random number generator wrapper for faster random number.
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*/
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#define GOOM_NB_RAND 0x10000
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typedef struct _GOOM_RANDOM {
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int array[GOOM_NB_RAND];
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unsigned short pos;
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} GoomRandom;
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GoomRandom *goom_random_init(int i);
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void goom_random_free(GoomRandom *grandom);
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inline static int goom_random(GoomRandom *grandom) {
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grandom->pos++; /* works because pos is an unsigned short */
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return grandom->array[grandom->pos];
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}
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inline static int goom_irand(GoomRandom *grandom, int i) {
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grandom->pos++;
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return grandom->array[grandom->pos] % i;
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}
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/* called to change the specified number of value in the array, so that the array does not remain the same*/
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void goom_random_update_array(GoomRandom *grandom, int numberOfValuesToChange);
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#endif
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