ABS intrinsic function

Standard: F77 F90 F95 F2003 F2008 Example program


<Syntax>

ABS ( A )

A : Integer, Real or Complex;

Result : If A is Complex, the result is Real with the same kind as A; otherwise the result has the same type and kind as A.

<Semantics>

The value of the result is an approximation to the absolute value of A. Like many intrinsic functions, this is elemental; the result has the same shape as A, with the operation being applied elementwise.

If A is of type Complex, the result is mathematically equal to SQRT(REAL(A)**2+AIMAG(A)**2) but is computed without undue overflow or underflow.

<Related>

SQRT intrinsic function