.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\"
.\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
.\" Distributed under GPL
.\" %%%LICENSE_END
.\"
.TH CEXP 3 2015-04-19 "" "Linux Programmer's Manual"
.SH NAME
cexp, cexpf, cexpl \- complex exponential function
.SH SYNOPSIS
.B #include <complex.h>
.PP
.BI "double complex cexp(double complex " z ");"
.br
.BI "float complex cexpf(float complex " z ");"
.br
.BI "long double complex cexpl(long double complex " z ");"
.PP
Link with \fI\-lm\fP.
.SH DESCRIPTION
These functions calculate e (2.71828..., the base of natural logarithms)
raised to the power of
.IR z .
.LP
One has:
.nf

    cexp(I * z) = ccos(z) + I * csin(z)
.fi
.SH VERSIONS
These functions first appeared in glibc in version 2.1.
.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lbw24 lb lb
l l l.
Interface	Attribute	Value
T{
.BR cexp (),
.BR cexpf (),
.BR cexpl ()
T}	Thread safety	MT-Safe
.TE
.sp 1
.SH CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008.
.SH SEE ALSO
.BR cabs (3),
.BR cexp2 (3),
.BR clog (3),
.BR cpow (3),
.BR complex (7)