alexvoste
37 lines
792 B
C
37 lines
792 B
C
#include <math.h>
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double pow(double x, double y) {
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if (y == 0.0) return 1.0;
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if (y == (int)y) {
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int n = (int)y;
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double result = 1.0;
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if (n > 0) {
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for (int i = 0; i < n; i++) {
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result *= x;
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}
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} else {
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for (int i = 0; i < -n; i++) {
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result /= x;
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}
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}
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return result;
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}
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if (x > 0.0) {
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int int_part = (int)y;
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double frac_part = y - int_part;
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double int_pow = pow(x, int_part);
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if (frac_part > 0.0) {
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return int_pow * (1.0 + frac_part * (x - 1.0));
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} else {
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return int_pow / (1.0 - frac_part * (x - 1.0));
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}
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}
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return NAN;
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} |