mirror of https://github.com/mkerrisk/man-pages
32 lines
771 B
Groff
32 lines
771 B
Groff
.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
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.\" Distributed under GPL
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.\"
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.TH CASINH 3 2002-07-28 "" "complex math routines"
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.SH NAME
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casinh, casinhf, casinhl \- complex arc sine hyperbolic
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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 casinh(double complex " z );
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.br
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.BI "float complex casinhf(float complex " z );
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.br
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.BI "long double complex casinhl(long double complex " z );
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.sp
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Link with \-lm.
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.SH DESCRIPTION
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The
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.BR casinh ()
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function calculates the complex asinh().
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If y = casinh(z), then z = csinh(y).
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The imaginary part of y is chosen in the interval [\-pi/2,pi/2].
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.LP
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One has casinh(z) = clog(z+csqrt(z*z+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 asinh (3),
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.BR cabs (3),
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.BR cimag (3),
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.BR complex (5)
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