diff options
Diffstat (limited to 'upstream/opensuse-tumbleweed/man3/csqrt.3')
| -rw-r--r-- | upstream/opensuse-tumbleweed/man3/csqrt.3 | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/upstream/opensuse-tumbleweed/man3/csqrt.3 b/upstream/opensuse-tumbleweed/man3/csqrt.3 new file mode 100644 index 00000000..319bbd13 --- /dev/null +++ b/upstream/opensuse-tumbleweed/man3/csqrt.3 @@ -0,0 +1,52 @@ +'\" t +.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) +.\" +.\" SPDX-License-Identifier: GPL-1.0-or-later +.\" +.TH csqrt 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +csqrt, csqrtf, csqrtl \- complex square root +.SH LIBRARY +Math library +.RI ( libm ", " \-lm ) +.SH SYNOPSIS +.nf +.B #include <complex.h> +.PP +.BI "double complex csqrt(double complex " z ); +.BI "float complex csqrtf(float complex " z ); +.BI "long double complex csqrtl(long double complex " z ); +.fi +.SH DESCRIPTION +These functions calculate the complex square root of +.IR z , +with a branch cut along the negative real axis. +(That means that \fIcsqrt(\-1+eps*I)\fP will be close to I while +\fIcsqrt(\-1\-eps*I)\fP will be close to \-I, \fIif eps\fP is a small positive +real number.) +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR csqrt (), +.BR csqrtf (), +.BR csqrtl () +T} Thread safety MT-Safe +.TE +.sp 1 +.SH STANDARDS +C11, POSIX.1-2008. +.SH HISTORY +glibc 2.1. +C99, POSIX.1-2001. +.SH SEE ALSO +.BR cabs (3), +.BR cexp (3), +.BR complex (7) |