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