CSQRT
Section: Linux Programmer's Manual (3)
Updated: 2017-09-15
Page Index
NAME
csqrt, csqrtf, csqrtl - complex square root
SYNOPSIS
#include <complex.h>
double complex csqrt(double complex z);
float complex csqrtf(float complex z);
long double complex csqrtl(long double complex z);
Link with -lm.
DESCRIPTION
These functions calculate the complex square root of
z,
with a branch cut along the negative real axis.
(That means that
csqrt(-1+eps*I) will be close to I while
csqrt(-1-eps*I) will be close to -I,
if eps is a small positive
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).
| Interface | Attribute | Value
|
|
csqrt(),
csqrtf(),
csqrtl()
| Thread safety | MT-Safe
|
CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008.
SEE ALSO
cabs(3),
cexp(3),
complex(7)
COLOPHON
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A description of the project,
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and the latest version of this page,
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