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fea681da | 1 | .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) |
2297bf0e | 2 | .\" |
38f20bb9 | 3 | .\" %%%LICENSE_START(GPL_NOVERSION_ONELINE) |
fea681da | 4 | .\" Distributed under GPL |
38f20bb9 | 5 | .\" %%%LICENSE_END |
fea681da | 6 | .\" |
c73595c2 | 7 | .TH CIMAG 3 2015-04-19 "" "Linux Programmer's Manual" |
fea681da MK |
8 | .SH NAME |
9 | cimag, cimagf, cimagl \- get imaginary part of a complex number | |
10 | .SH SYNOPSIS | |
11 | .B #include <complex.h> | |
68e4db0a | 12 | .PP |
c13182ef | 13 | .BI "double cimag(double complex " z ");" |
d39541ec | 14 | .br |
fea681da | 15 | .BI "float cimagf(float complex " z ");" |
d39541ec | 16 | .br |
fea681da | 17 | .BI "long double cimagl(long double complex " z ");" |
68e4db0a | 18 | .PP |
20c58d70 | 19 | Link with \fI\-lm\fP. |
fea681da | 20 | .SH DESCRIPTION |
5600f73a | 21 | These functions return the imaginary part of the complex number |
3b8affde | 22 | .IR z . |
dd3568a1 | 23 | .PP |
3b8affde | 24 | One has: |
207050fa | 25 | .PP |
3b8affde | 26 | .nf |
3b8affde | 27 | z = creal(z) + I * cimag(z) |
494fc522 | 28 | .fi |
f0d7ce1d MK |
29 | .SH VERSIONS |
30 | These functions first appeared in glibc in version 2.1. | |
e3543fbb | 31 | .SH ATTRIBUTES |
2724812b MK |
32 | For an explanation of the terms used in this section, see |
33 | .BR attributes (7). | |
34 | .TS | |
35 | allbox; | |
36 | lbw27 lb lb | |
37 | l l l. | |
38 | Interface Attribute Value | |
39 | T{ | |
e3543fbb PH |
40 | .BR cimag (), |
41 | .BR cimagf (), | |
e3543fbb | 42 | .BR cimagl () |
2724812b MK |
43 | T} Thread safety MT-Safe |
44 | .TE | |
47297adb | 45 | .SH CONFORMING TO |
9a74e018 | 46 | C99, POSIX.1-2001, POSIX.1-2008. |
19c98696 MK |
47 | .SH NOTES |
48 | gcc also supports __imag__. | |
49 | That is a GNU extension. | |
47297adb | 50 | .SH SEE ALSO |
fea681da MK |
51 | .BR cabs (3), |
52 | .BR creal (3), | |
a8bda636 | 53 | .BR complex (7) |