csqrt (3)
NAME
csqrt, csqrtf, csqrtl - complex square rootSYNOPSIS
#include <complex.h>
double complex csqrt(double complex z);
float complex csqrtf(float complex z);
long double complex csqrtl(long double complex z);
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)COLOPHON
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