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CABS(3) FreeBSD Library Functions Manual CABS(3) NAME cabs, cabsf, cabsl - return a complex absolute value SYNOPSIS #include <complex.h> double cabs(double complex z); float cabsf(float complex z); long double cabsl(long double complex z); #include <tgmath.h> complex-floating cabs(complex-floating z); DESCRIPTION These functions compute the complex absolute value (also called norm, modulus, or magnitude) of z. RETURN VALUES These functions return the complex absolute value. ERRORS No errors are defined. SEE ALSO IEEE Std 1003.1-2001 ("POSIX.1") <complex.h> COPYRIGHT Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . FreeBSD 14.1-RELEASE-p8 September 27, 2017 FreeBSD 14.1-RELEASE-p8