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https://gitlab.com/80486DX2-66/gists
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47 lines
939 B
C
47 lines
939 B
C
/*
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* opt_int_div.c
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*
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* "Optimized integer division"
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*
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* Author: Intel A80486DX2-66
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* License: Creative Commons Zero 1.0 Universal
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*/
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#include "opt_int_div.h"
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#ifdef TEST
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# include <inttypes.h>
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# include <stdio.h>
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int main(void) {
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printf("Loop: a > 0, b > 0\n");
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for (uint8_t a = 3; a <= 24; a++)
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for (uint8_t b = 1; b <= 8; b++) {
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if (b >= a)
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break;
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printf("%" PRIu8 " / %" PRIu8 " = %" PRIu8 "\n", a, b,
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OPT_INT_DIV(a, b));
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}
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printf("Loop: a < 0, b > 0\n");
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for (int8_t a = -3; a >= -24; a--)
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for (int8_t b = 1; b <= 8; b++) {
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if (b >= abs(a))
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break;
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printf("%" PRId8 " / %" PRId8 " = %" PRId8 "\n", a, b,
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OPT_INT_DIV(a, b));
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}
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printf("Loop: a < 0, b < 0\n");
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for (int8_t a = -3; a >= -24; a--)
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for (int8_t b = -1; b >= -8; b--) {
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if (b <= a)
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break;
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printf("%" PRId8 " / %" PRId8 " = %" PRId8 "\n", a, b,
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OPT_INT_DIV(a, b));
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}
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return 0;
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}
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#endif
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