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+.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
+.\" Distributed under GPL
+.\"
+.TH CCOSH 3 2002-07-28 "" "complex math routines"
+.SH NAME
+ccosh, ccoshf, ccoshl \- complex hyperbolic cosine
+.SH SYNOPSIS
+.B #include <complex.h>
+.sp
+.BI "double complex ccosh(double complex " z ");"
+.sp
+.BI "float complex ccoshf(float complex " z ");"
+.sp
+.BI "long double complex ccoshl(long double complex " z ");"
+.sp
+Link with \-lm.
+.SH DESCRIPTION
+The complex hyperbolic cosine function ccosh(z) is defined as
+(exp(z)+exp(-z))/2.
+.SH "CONFORMING TO"
+C99
+.SH "SEE ALSO"
+.BR cabs (3),
+.BR csinh (3),
+.BR ctanh (3),
+.BR complex (5)