leetcode/src/50.c at master · lennylxx/leetcode · GitHub

Name: leetcode/src/50.c at master · lennylxx/leetcode · GitHub
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#include<stdio.h>

doublemyPow(doublex, intn) {
if (x==1||n==0) return1;
if (n==1) returnx;

doubleans=1.0;
unsignedun;

un= (n>0) ? (n) : (-n);
x= (n>0) ? (x) : (1 / x);

while (un) {
if (un&1) {
ans=ans*x;
 }
x *= x;
un >>= 1;
 }

returnans;
}

intmain() {

doublex=9.125;

printf("%f\n", myPow(x, 1));
printf("%f\n", myPow(x, 5));
printf("%f\n", myPow(x, -5));
printf("%f\n", myPow(1.0, -2147483648));
return0;
}