Fabs() function in C
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fabs() function returns the absolute value of the given floating-point number x.
It's declared in the math.h header file.
The argument x can be of type float, double, or long double.
The return type of fabs() matches the type of the argument provided.
It's commonly used to get the magnitude of a floating-point number regardless of its sign.
Syntax fabs() in C:
double fabs(double x);Example:
//Program for fabs() function in C #include<stdio.h>#include<math.h> int main() { double num = -10.5; double absolute_value = fabs(num); printf("Absolute value of %lf = %lf\n", num, absolute_value); return 0; }
Output:
Absolute value of -10.500000 = 10.500000
In the provided program, fabs() is used to find the absolute value of -10.5.
The result is printed to the console.
Uses of fabs function in C:
Useful for mathematical calculations where only the magnitude of a number is relevant.
Frequently used in scientific and engineering applications for absolute value computations.
Helps in simplifying conditional logic by avoiding explicit checks for negative numbers.
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