## Linux and UNIX Man Pages

Test Your Knowledge in Computers #244
Difficulty: Medium
Networking research in the early 1970s by Robert E. Kahn and Vint Cerf let to the formulation of the Transmission Control Program (TCP), and its specification in December 1974 in RFC 699.
True or False?

# cexp(3) [redhat man page]

```CEXP(3)                                                      Linux Programmer's Manual                                                     CEXP(3)

NAME
cexp, cexpf, cexpl - complex exponential function

SYNOPSIS
#include <complex.h>

double complex cexp(double complex z);
float complex cexpf(float complex z);
long double complex cexpl(long double complex z);

DESCRIPTION
These functions calculate e (2.71828..., the base of natural logarithms) raised to the power of z.

One has:

cexp(I * z) = ccos(z) + I * csin(z)

VERSIONS
These functions first appeared in glibc in version 2.1.

ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).

+-------------------------+---------------+---------+
|Interface                | Attribute     | Value   |
+-------------------------+---------------+---------+
|cexp(), cexpf(), cexpl() | Thread safety | MT-Safe |
+-------------------------+---------------+---------+

CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008.

cabs(3), cexp2(3), clog(3), cpow(3), complex(7)

COLOPHON
This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the

2017-09-15                                                             CEXP(3)```

## Check Out this Related Man Page

```CEXP(3) 						     Linux Programmer's Manual							   CEXP(3)

NAME
cexp, cexpf, cexpl - complex exponential function

SYNOPSIS
#include <complex.h>

double complex cexp(double complex z);
float complex cexpf(float complex z);
long double complex cexpl(long double complex z);

DESCRIPTION
These functions calculate e (2.71828..., the base of natural logarithms) raised to the power of z.

One has:

cexp(I * z) = ccos(z) + I * csin(z)

VERSIONS
These functions first appeared in glibc in version 2.1.

ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).

+-------------------------+---------------+---------+
|Interface		 | Attribute	 | Value   |
+-------------------------+---------------+---------+
|cexp(), cexpf(), cexpl() | Thread safety | MT-Safe |
+-------------------------+---------------+---------+

CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008.