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Various reformattings.

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Michael Kerrisk 2007-12-24 11:42:27 +00:00
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man3/cacosh.3
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@ -1,7 +1,7 @@
.\" Copyright 2002 Walter Harms(walter.harms@informatik.uni-oldenburg.de)
.\" Distributed under GPL
.\"
.TH CACOSH 3 2002-07-28 "" "Linux Programmer's Manual"
.TH CACOSH 3 2007-12-26 "" "Linux Programmer's Manual"
.SH NAME
cacosh, cacoshf, cacoshl \- complex arc hyperbolic cosine
.SH SYNOPSIS
@ -17,13 +17,21 @@ Link with \fI\-lm\fP.
.SH DESCRIPTION
The
.BR cacosh ()
function calculates the complex acosh(3).
If y = cacosh(z), then z = ccosh(y).
The imaginary part of y is chosen in the interval [\-pi,pi].
The real part of y is chosen non-negative.
function calculates the complex arc hyperpolic cosinze of
.IR z .
If \fIy\ =\ cacosh(z)\fP, then \fIz\ =\ ccosh(y)\fP.
The imaginary part of
.I y
is chosen in the interval [\-pi,pi].
The real part of
.I y
is chosen non-negative.
.LP
One has:
cacosh(z) = (0.5) * clog((1 + z) / (1 \- z)).
.nf
cacosh(z) = (0.5) * clog((1 + z) / (1 \- z))
.fi
.SH "CONFORMING TO"
C99
.SH "SEE ALSO"