CSQRT
Section: Linux Programmer's Manual (3)
Updated: 2008-08-11
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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
Calculate the square root of a given complex number,
with nonnegative real part, and
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.
CONFORMING TO
C99.
SEE ALSO
cabs(3),
cexp(3),
complex(7)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- VERSIONS
-
- CONFORMING TO
-
- SEE ALSO
-
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