forked from bartvdbraak/blender
Math Lib: pow_i for int power-of
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@ -214,6 +214,7 @@ MINLINE int iroundf(float a);
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MINLINE int divide_round_i(int a, int b);
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MINLINE int mod_i(int i, int n);
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int pow_i(int base, int exp);
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double double_round(double x, int ndigits);
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#ifdef BLI_MATH_GCC_WARN_PRAGMA
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@ -31,6 +31,21 @@
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#include "BLI_strict_flags.h"
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int pow_i(int base, int exp)
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{
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int result = 1;
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BLI_assert(exp >= 0);
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while (exp) {
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if (exp & 1) {
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result *= base;
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}
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exp >>= 1;
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base *= base;
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}
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return result;
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}
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/* from python 3.1 floatobject.c
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* ndigits must be between 0 and 21 */
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double double_round(double x, int ndigits)
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