cabs
Section: C Library Functions (3)
Updated: 2022-12-15
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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.
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
abs(3),
cimag(3),
hypot(3),
complex(7)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- VERSIONS
-
- ATTRIBUTES
-
- STANDARDS
-
- NOTES
-
- SEE ALSO
-
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