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NAME
csqrt, csqrtf, csqrtl - complex square root
LIBRARY
Math library (libm, -lm)
SYNOPSIS
bash
#include <complex.h>bash
double complex csqrt(double complex \nz\n);\n
\nfloat complex csqrtf(float complex \nz\n);\n
\nlong double complex csqrtl(long double complex \nz\n);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.)
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| csqrt (), csqrtf (), csqrtl () | Thread safety | MT-Safe |
STANDARDS
C11, POSIX.1-2008.
HISTORY
glibc 2.1. C99, POSIX.1-2001.
SEE ALSO
cabs(3), cexp(3), complex(7)