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.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\" Distributed under GPL
.\"
.TH CLOG2 3 2002-07-28 "" "complex math routines"
.SH NAME
clog2, clog2f, clog2l \- base-2 logarithm of a complex number
.SH SYNOPSIS
.B #include <complex.h>
.sp
.BI "double complex clog2(double complex " z );
.br
.BI "float complex clog2f(float complex " z );
.br
.BI "long double complex clog2l(long double complex " z );
.sp
Link with \-lm.
.SH DESCRIPTION
The logarithm is defined as log2(cabs(z))+I*carg(z).
Note that
.I z
close to zero will cause an overflow.
.SH "CONFORMING TO"
These function names are reserved for future use in C99.
.SH AVAILABILITY
Not yet in glibc, as at version 2.4.
.\" But reserved in NAMESPACE.
.SH "SEE ALSO"
.BR cabs (3),
.BR cexp (3),
.BR clog (3),
.BR clog10 (3),
.BR complex (7)
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