csqrt(3) | Library Functions Manual | csqrt(3) |
NAME
csqrt, csqrtf, csqrtl - complex square root
LIBRARY
Math library (libm, -lm)
SYNOPSIS
#include <complex.h>
double complex csqrt(double complex z); float complex csqrtf(float complex z); long double complex csqrtl(long double complex z);
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
2024-05-02 | Linux man-pages 6.9.1 |