| .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) |
| .\" |
| .\" %%%LICENSE_START(GPL_NOVERSION_ONELINE) |
| .\" Distributed under GPL |
| .\" %%%LICENSE_END |
| .\" |
| .TH CABS 3 2015-04-19 "" "Linux Programmer's Manual" |
| .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 \fI\-lm\fP. |
| .SH DESCRIPTION |
| These functions return the absolute value of the complex number |
| .IR z . |
| The result is a real number. |
| .SH VERSIONS |
| These functions first appeared in glibc in version 2.1. |
| .SH ATTRIBUTES |
| For an explanation of the terms used in this section, see |
| .BR attributes (7). |
| .TS |
| allbox; |
| lbw24 lb lb |
| l l l. |
| Interface Attribute Value |
| T{ |
| .BR cabs (), |
| .BR cabsf (), |
| .BR cabsl () |
| T} Thread safety MT-Safe |
| .TE |
| .SH CONFORMING TO |
| C99, POSIX.1-2001, POSIX.1-2008. |
| .SH NOTES |
| The function is actually an alias for |
| .I "hypot(a,\ b)" |
| (or, equivalently, |
| .IR "sqrt(a*a\ +\ b*b)" ). |
| .SH SEE ALSO |
| .BR abs (3), |
| .BR cimag (3), |
| .BR hypot (3), |
| .BR complex (7) |
