'\" t
.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\"
.\" SPDX-License-Identifier: GPL-1.0-or-later
.\"
.TH cexp 3 2023-10-31 "Linux man-pages 6.7"
.SH NAME
cexp, cexpf, cexpl \- complex exponential function
.SH LIBRARY
Math library
.RI ( libm ", " \-lm )
.SH SYNOPSIS
.nf
.B #include <complex.h>
.P
.BI "double complex cexp(double complex " z );
.BI "float complex cexpf(float complex " z );
.BI "long double complex cexpl(long double complex " z );
.fi
.SH DESCRIPTION
These functions calculate e (2.71828..., the base of natural logarithms)
raised to the power of
.IR z .
.P
One has:
.P
.in +4n
.EX
cexp(I * z) = ccos(z) + I * csin(z)
.EE
.in
.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lbx lb lb
l l l.
Interface	Attribute	Value
T{
.na
.nh
.BR cexp (),
.BR cexpf (),
.BR cexpl ()
T}	Thread safety	MT-Safe
.TE
.SH STANDARDS
C11, POSIX.1-2008.
.SH HISTORY
glibc 2.1.
C99, POSIX.1-2001.
.SH SEE ALSO
.BR cabs (3),
.BR cexp2 (3),
.BR clog (3),
.BR cpow (3),
.BR complex (7)