Manpage of CSQRT
CSQRTSection: Linux Programmer's Manual (3)
NAMEcsqrt, csqrtf, csqrtl - complex square root
double complex csqrt(double complex z);
float complex csqrtf(float complex z);
long double complex csqrtl(long double complex z);
DESCRIPTIONThese 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.)
VERSIONSThese functions first appeared in glibc in version 2.1.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
|csqrt(), csqrtf(), csqrtl()||Thread safety||MT-Safe|
CONFORMING TOC99, POSIX.1-2001, POSIX.1-2008.
SEE ALSOcabs(3), cexp(3), complex(7)
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Time: 22:27:52 GMT, June 20, 2016