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NAME | SYNOPSIS | DESCRIPTION | VERSIONS | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON |
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CSQRT(3) Linux Programmer's Manual CSQRT(3)
csqrt, csqrtf, csqrtl - complex square root
#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.
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.)
These functions first appeared in glibc in version 2.1.
For an explanation of the terms used in this section, see
attributes(7).
┌────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├────────────────────────────┼───────────────┼─────────┤
│csqrt(), csqrtf(), csqrtl() │ Thread safety │ MT-Safe │
└────────────────────────────┴───────────────┴─────────┘
C99, POSIX.1-2001, POSIX.1-2008.
cabs(3), cexp(3), complex(7)
This page is part of release 4.15 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
2017-09-15 CSQRT(3)
Pages that refer to this page: conj(3), sqrt(3), complex(7)
Copyright and license for this manual page
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