We cannot provide a description for this page right now

The fabs() function returns the absolute value of a number.

The C math library fabs() function accepts the parameter(x) of type double that returns the absolute value of x. This function is defined under the header that calculates the absolute value of a float point number.

July 23, 2025 - fabs() function of math.h header file in C programming is used to get the absolute value of a floating point number.

January 31, 2023 - The fabs() function returns the absolute value of the argument. Mathematically |a|. If a is value given in the argument.

The fabs() function returns the absolute (positive) value of a number.

The math.fabs() method returns the absolute value of a number, as a float.

July 28, 2025 - The fabs functions return the absolute value of the argument x.

December 16, 2005 - The fabs() function returns the absolute value of its floating-point argument x; if x is greater than or equal to 0, the return value is equal to x.

The fabs() function in C++ returns the absolute value of the argument.

The fabs function returns the absolute value of a floating-point number represented by x.

April 13, 2025 - The fabs() function in C++ calculates and returns the absolute value of a floating-point number. It returns the non-negative value of the input, effectively converting any negative number to its positive equivalent.

November 7, 2023 - The fabs in C is a library function provided within the math.h header file of the C programming language.

The fabs() function in C++ is used to return the absolute value of an argument passed to the function.

fabs() function computes the absolute value of a floating-point number x. The · fabsf() function is a single-precision version of · fabs(). x · Is a floating point value. The · fabs() function returns the absolute value of x. If x is NaN, NaN is returned.

function fabs ( value : float or double ) return_val [dimsizes(value)] : float or double

Upon successful completion, these functions shall return the absolute value of x. ... If x is ±0, +0 shall be returned. If x is ±Inf, +Inf shall be returned. No errors are defined. The following sections are informative. This example shows the use of fabs() to compute the 1-norm of a vector ...

December 12, 2024 - The fabs() function from the C standard library's math.h header file is used to compute the absolute value of a floating-point number.

#include <math.h> #include <stdio.h> typedef union { float v; struct { int mantissa : 23; int exponent : 8; int negative : 1; } b; } components; float fabs1(float f) { return f >= 0.0 ? f : -f; } float fabs2(float f) { components c; c.v = f; c.b.negative = 0; return c.v; } float fabs3(float f) { double aux = f; unsigned short cw; __asm__ ( "finit;\ fstcw %[cw];\ andw $0xf0ff, %[cw];\ orw $0x0200, %[cw];\ fldcw %[cw];\ fldl %[aux];\ fabs;\ fstpl %[aux];" : [aux] "=mr" (aux) : "m" (aux), [cw] "m" (cw) ); return aux; } void main(void) { printf("fabs(-189.55f) = %f\n", fabs(-189.55f)); printf("fabs1(-189.55f) = %f\n", fabs1(-189.55f)); printf("fabs2(-189.55f) = %f\n", fabs2(-189.55f)); printf("fabs3(-189.55f) = %f\n", fabs3(-189.55f)); } There are three different functions, one using a simple decision, one a bit more complicated using unions, and a final one using x86 assembly.