| .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) |
| .\" Distributed under GPL |
| .\" |
| .TH CABS 3 2002-07-28 "" "complex math routines" |
| .SH NAME |
| cabs, cabsf, cabsl \- absolute value of a complex number |
| .SH SYNOPSIS |
| .B #include <complex.h> |
| .sp |
| .BI "double cabs(double complex " z ); |
| .br |
| .BI "float cabsf(float complex " z ); |
| .br |
| .BI "long double cabsl(long double complex " z ); |
| .sp |
| Link with \-lm. |
| .SH DESCRIPTION |
| The |
| .BR cabs () |
| function returns the absolute value of the complex number z. The |
| result is a real number. |
| .SH NOTE |
| The function is actually an alias for hypot(a,b) = sqrt(a*a+b*b). |
| .SH "CONFORMING TO" |
| C99 |
| .SH "SEE ALSO" |
| .BR abs (3), |
| .BR cimag (3), |
| .BR hypot (3), |
| .BR complex (5) |