// SPDX-License-Identifier: GPL-2.0/* * An integer based power function * * Derived from drivers/video/backlight/pwm_bl.c */#include <linux/export.h>#include <linux/math.h>#include <linux/types.h>/** * int_pow - computes the exponentiation of the given base and exponent * @base: base which will be raised to the given power * @exp: power to be raised to * * Computes: pow(base, exp), i.e. @base raised to the @exp power */u64 int_pow(u64 base, unsigned int exp){ u64 result = 1; while (exp) { if (exp & 1) result *= base; exp >>= 1; base *= base; } return result;}EXPORT_SYMBOL_GPL(int_pow);
// SPDX-License-Identifier: GPL-2.0
/*
* An integer based power function
*
* Derived from drivers/video/backlight/pwm_bl.c
*/
#include <linux/export.h>
#include <linux/math.h>
#include <linux/types.h>
/**
* int_pow - computes the exponentiation of the given base and exponent
* @base: base which will be raised to the given power
* @exp: power to be raised to
*
* Computes: pow(base, exp), i.e. @base raised to the @exp power
*/
u64 int_pow(u64 base, unsigned int exp)
{
u64 result = 1;
while (exp) {
if (exp & 1)
result *= base;
exp >>= 1;
base *= base;
}
return result;
}
EXPORT_SYMBOL_GPL(int_pow);