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1// SPDX-License-Identifier: GPL-2.02/*3 * An integer based power function4 *5 * Derived from drivers/video/backlight/pwm_bl.c6 */7 8#include <linux/export.h>9#include <linux/math.h>10#include <linux/types.h>11 12/**13 * int_pow - computes the exponentiation of the given base and exponent14 * @base: base which will be raised to the given power15 * @exp: power to be raised to16 *17 * Computes: pow(base, exp), i.e. @base raised to the @exp power18 */19u64 int_pow(u64 base, unsigned int exp)20{21 u64 result = 1;22 23 while (exp) {24 if (exp & 1)25 result *= base;26 exp >>= 1;27 base *= base;28 }29 30 return result;31}32EXPORT_SYMBOL_GPL(int_pow);33