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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:24 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:24 +0000 |
commit | 100d1b33f088fd38f69129afff7f9c2a1e084a57 (patch) | |
tree | 5bf6b0bb14f22ecf0a5e9439fdd4c4758402400c /man/man3/csqrt.3 | |
parent | Releasing progress-linux version 6.7-2~progress7.99u1. (diff) | |
download | manpages-100d1b33f088fd38f69129afff7f9c2a1e084a57.tar.xz manpages-100d1b33f088fd38f69129afff7f9c2a1e084a57.zip |
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man/man3/csqrt.3')
-rw-r--r-- | man/man3/csqrt.3 | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/man/man3/csqrt.3 b/man/man3/csqrt.3 new file mode 100644 index 0000000..b047a6d --- /dev/null +++ b/man/man3/csqrt.3 @@ -0,0 +1,51 @@ +'\" t +.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) +.\" +.\" SPDX-License-Identifier: GPL-1.0-or-later +.\" +.TH csqrt 3 2024-05-02 "Linux man-pages (unreleased)" +.SH NAME +csqrt, csqrtf, csqrtl \- complex square root +.SH LIBRARY +Math library +.RI ( libm ", " \-lm ) +.SH SYNOPSIS +.nf +.B #include <complex.h> +.P +.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 +.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) |