cabs(3) — Linux manual page

cabs(3)                 Library Functions Manual                 cabs(3)

NAME

       cabs, cabsf, cabsl - absolute value of a complex number

LIBRARY

       Math library (libm, -lm)

SYNOPSIS

       #include <complex.h>

       double cabs(double complex z);
       float cabsf(float complex z);
       long double cabsl(long double complex z);

DESCRIPTION

       These functions return the absolute value of the complex number
       z.  The result is a real number.

ATTRIBUTES

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌─────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                           │ Attribute     │ Value   │
       ├─────────────────────────────────────┼───────────────┼─────────┤
       │ cabs(), cabsf(), cabsl()            │ Thread safety │ MT-Safe │
       └─────────────────────────────────────┴───────────────┴─────────┘

STANDARDS

       C11, POSIX.1-2008.

HISTORY

       glibc 2.1.  C99, POSIX.1-2001.

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)

COLOPHON

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Linux man-pages 6.9.1          2024-05-02                        cabs(3)

Pages that refer to this page: abs(3), cacosh(3), carg(3), casinh(3), catanh(3), ccos(3), ccosh(3), cexp2(3), cexp(3), cimag(3), clog10(3), clog2(3), clog(3), conj(3), cpow(3), cproj(3), creal(3), csin(3), csinh(3), csqrt(3), ctan(3), ctanh(3), fabs(3), hypot(3), complex(7)

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