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.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\" Distributed under GPL
.\"
.TH CTAN 3 2008-08-11 "" "Linux Programmer's Manual"
.SH NAME
ctan, ctanf, ctanl \- complex tangent function
.SH SYNOPSIS
.B #include <complex.h>
.sp
.BI "double complex ctan(double complex " z ");"
.br
.BI "float complex ctanf(float complex " z );
.br
.BI "long double complex ctanl(long double complex " z ");"
.sp
Link with \fI\-lm\fP.
.SH DESCRIPTION
The complex tangent function is defined as:
.nf
ctan(z) = csin(z) / ccos(z)
.fi
.SH VERSIONS
These functions first appeared in glibc in version 2.1.
.SH "CONFORMING TO"
C99.
.SH "SEE ALSO"
.BR cabs (3),
.BR ccos (3),
.BR csin (3),
.BR complex (7)
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