// #include <math.h> gives you access to:
// sqrt, cbrt
// log, log10, exp
// fabs, floor, ceil, pow
// M_PI, M_E (if supported)
#include <stdio.h>
#include <math.h>
int main() {
double x = 9.0;
printf("sqrt(x) = %f\n", sqrt(x));
printf("log(x) = %f\n", log(x)); // natural log
printf("exp(1) = %f\n", exp(1)); // e^1
printf("fabs(-3.5) = %f\n", fabs(-3.5));
printf("floor(3.7) = %f\n", floor(3.7));
printf("ceil(3.2) = %f\n", ceil(3.2));
printf("pow(2, 8) = %f\n", pow(2, 8));
return 0;
}
/*
run:
sqrt(x) = 3.000000
log(x) = 2.197225
exp(1) = 2.718282
fabs(-3.5) = 3.500000
floor(3.7) = 3.000000
ceil(3.2) = 4.000000
pow(2, 8) = 256.000000
*/
