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