gsl_complex_rect undefined?

[Abraham David Smith <abrahamsmith at students dot wisc dot edu>]

I am trying to use GSL 1.0 on an ix86 running an essentially normal RedHat
Linux 7.1 installation (with all of RedHat's published patches applied
to gcc, etc). 

Consider the following code snippet:

#include <iostream.h>
#include <gsl/gsl_complex.h>
void main()
  {
  gsl_complex a = gsl_complex_rect(1.0,2.0);
  cout << GSL_REAL(a) << ", " << GSL_IMAG(a) << endl;
  GSL_SET_COMPLEX (&a, 3.0, 4.0);
  cout << GSL_REAL(a) << ", " << GSL_IMAG(a) << endl;
  }

Compiling this with g++ gives:

testcomplex.cpp: In function `int main (...)':
testcomplex.cpp:9: `gsl_complex_rect' undeclared (first use this 
function)
testcomplex.cpp:9: (Each undeclared identifier is reported only once 
for each function it appears in.)


now consider the snippet:

#include <iostream.h>
#include <gsl/gsl_complex.h>
void main()
  {
  gsl_complex a;
  cout << GSL_REAL(a) << ", " << GSL_IMAG(a) << endl;
  GSL_SET_COMPLEX (&a, 3.0, 4.0);
  cout << GSL_REAL(a) << ", " << GSL_IMAG(a) << endl;
  }


this compiles and gives:
2.10391, 7.02217
3, 4



According to page 18 of the GSL manual
[ http://sources.redhat.com/gsl/ref/gsl-ref_5.html#SEC34 ], the function 
gsl_complex_rect should be defined.  What's up here?


-- 
# Abraham David Smith       UW--Madison Mathematics/Physics Undergraduate [*] #
# <abrahamsmith@students.wisc.edu>  Y!:abrahamdavidsmith  AOL-IM:abrahamsmith #
# http://euclid.dsl.wisc.edu/~abe     Molon Labe!       Defend your rights!   #
# [*]: The views I express are not necessarily those of the UW--Madison, etc. #