mirror of https://github.com/mkerrisk/man-pages
35 lines
801 B
Groff
35 lines
801 B
Groff
.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
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.\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
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.\" Distributed under GPL
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.\" %%%LICENSE_END
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.\"
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.TH CSIN 3 2008-08-11 "" "Linux Programmer's Manual"
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.SH NAME
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csin, csinf, csinl \- complex sine function
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.SH SYNOPSIS
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.B #include <complex.h>
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.sp
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.BI "double complex csin(double complex " z ");"
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.br
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.BI "float complex csinf(float complex " z );
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.br
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.BI "long double complex csinl(long double complex " z ");"
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.sp
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Link with \fI\-lm\fP.
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.SH DESCRIPTION
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The complex sine function is defined as:
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.nf
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csin(z) = (exp(i * z) \- exp(\-i * z)) / (2 * i)
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.fi
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.SH VERSIONS
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These functions first appeared in glibc in version 2.1.
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.SH CONFORMING TO
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C99.
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.SH SEE ALSO
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.BR cabs (3),
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.BR casin (3),
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.BR ccos (3),
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.BR ctan (3),
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.BR complex (7)
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