How to get absolute value from double - c-language

Question

I want the absolute-value from a negative double - and I thought the abs-function was as easy to use as in java - but NOT!

It seems that the abs

Answer 1

It's worth noting that Java can overload a method such as abs so that it works with an integer or a double. In C, overloading doesn't exist, so you need different functions for integer versus double.

Answer 2

I have found that using cabs(double), cabsf(float), cabsl(long double), __cabsf(float), __cabs(double), __cabsf(long double) is the solution

Answer 3

Use fabs instead of abs to find absolute value of double (or float) data types. Include the <math.h> header for fabs function.

double d1 = fabs(-3.8951);

Answer 4

Use fabs() (in math.h) to get absolute-value for double:

double d1 = fabs(-3.8951);

Answer 5

  //use fabs()
  double sum_primary_diagonal=0;
  double sum_secondary_diagonal=0;
  double difference = fabs(sum_primary_diagonal - sum_secondary_diagonal);