What is floorf() in C?
floorf() in C is used to calculate the largest integer value not greater than the argument value. floorf() is defined in the math.h header file and the function declaration is as follows:
float floorf(float arg);
Parameters and return value
arg: floating point value
Return value: largest integer value not greater than arg
Example program
#include <math.h>#include <stdio.h>int main(void){printf("floor(+3.0) = %.1f\n", floorf(3.0));printf("floor(+3.9) = %.1f\n", floorf(3.9));printf("floor(-3.9) = %.1f\n", floorf(-3.9));printf("floor(-0.0) = %.1f\n", floorf(-0.0));printf("floor(0.0) = %.1f\n", floorf(0.0));/* special cases */printf("floor(inf) = %.1f\n", floorf(INFINITY));printf("floor(-inf) = %.1f\n", floorf(-INFINITY));printf("floorf = %f\n", floorf(NAN));return 0;}
Explanation
First, we import the math.h header file from the C standard library. The program then simply prints the output of floorf() on possible example values.
Free Resources
Copyright ©2025 Educative, Inc. All rights reserved
TRENDING TOPICS
