cabs - Man Page
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.
Versions
These functions were added in glibc 2.1.
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
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
Referenced By
abs(3), cacosh(3), carg(3), casinh(3), catanh(3), ccos(3), ccosh(3), cexp(3), cexp2(3), cimag(3), clog(3), clog10(3), clog2(3), complex(7), conj(3), cpow(3), cproj(3), creal(3), csin(3), csinh(3), csqrt(3), ctan(3), ctanh(3), fabs(3), hypot(3).
The man pages cabsf(3) and cabsl(3) are aliases of cabs(3).
2022-12-15 Linux man-pages 6.02