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CABS(3) Linux Programmer's Manual CABS(3) NAME cabs, cabsf, cabsl - absolute value of a complex number SYNOPSIS #include <complex.h> double cabs(double complex z); float cabsf(float complex z); long double cabsl(long double complex z); Link with -lm. DESCRIPTION These functions return the absolute value of the complex number z. The result is a real number. VERSIONS These functions first appeared in glibc in version 2.1. ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ¬ββββββββββββββββ¬ββββββββββ βInterface β Attribute β Value β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββΌββββββββββββββββΌββββββββββ€ βcabs(), cabsf(), cabsl() β Thread safety β MT-Safe β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ΄ββββββββββββββββ΄ββββββββββ CONFORMING TO C99, POSIX.1-2001, POSIX.1-2008. NOTES The function is actually an alias for hypot(a, b) (or, equivalently, sqrt(a*a + b*b)). SEE ALSO abs(3), cimag(3), hypot(3), complex(7) 2021-03-22 CABS(3)