47 lines
767 B
C
47 lines
767 B
C
#include <stdio.h>
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typedef int fixed;
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#define FIXD (sizeof(fixed)*4)
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fixed mpy(fixed a, fixed b) {
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return (fixed) (((long)a * (long)b) >> FIXD);
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}
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fixed div(fixed a, fixed b) {
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return (fixed) (((long)a << FIXD) / b);
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}
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fixed add(fixed a, fixed b) {
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return a + b;
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}
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fixed sub(fixed a, fixed b) {
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return a - b;
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}
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fixed fromdouble(double a) {
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return (fixed) (a * (long)(1 << FIXD));
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}
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double todouble(fixed a) {
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return (double)a / (long)(1 << FIXD);
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}
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int main( int argc, char *argv[] ) {
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double af = 1.0f;
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fixed a = fromdouble(af);
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double bf = 2.0f;
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fixed b = fromdouble(bf);
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fixed c = div(a,b);
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c = div(c,b);
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double cf = todouble(c);
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printf("%f\n",cf);
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printf("%f\n",todouble(1));
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return 0;
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}
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