man3/cimag.3

   1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
   2 .\" Distributed under GPL
   3 .\"
   4 .TH CIMAG 3 2002-07-28 "" "complex math routines"
   5 .SH NAME
   6 cimag, cimagf, cimagl \- get imaginary part of a complex number
   7 .SH SYNOPSIS
   8 .B #include <complex.h>
   9 .sp
  10 .BI "double cimag(double complex " z ");"
  11 .sp
  12 .BI "float cimagf(float complex " z ");"
  13 .sp
  14 .BI "long double cimagl(long double complex " z ");"
  15 .sp
  16 Link with \-lm.
  17 .SH DESCRIPTION
  18 The cimag() function returns the imaginary part of the complex number z.
  19 .LP
  20 One has z = creal(z) + I*cimag(z).
  21 .SH NOTE
  22 gcc also supports __imag__. That is a GNU extension.
  23 .SH "CONFORMING TO"
  24 C99
  25 .SH "SEE ALSO"
  26 .BR cabs (3),
  27 .BR creal (3),
  28 .BR complex (5)