[Rd] Declaration of RuleThickness() in src/main/plotmath.c (PR#7380)

[huber at ebi.ac.uk]

Full_Name: Wolfgang Huber
Version: R-2.0.1
OS: HP-UX B.11.23 ia64
Submission from: (NULL) (81.104.215.6)


Hi, 

I hope I am not missing something basic... I am using a somewhat exotic compiler
and OS, but if I understand what I am seeing the problem is more general:

In src/main/plotmath.c, the following function is defined

/* Thickness of rules */
static double RuleThickness()
{
    return 0.015;
}

but later it is called in expressions like

  RuleThickness(gc, dd)

This leads to a compiler error:

cc +DD64 -I../../src/extra/zlib -I../../src/extra/bzip2 -I../../src/extra/pcre 
-I. -I../../src/include -I../../src/include -I/usr/local/include -DHAVE_CONFIG_H
  -O +e -c plotmath.c -o plotmath.o
Error 181: "plotmath.c", line 255 # Expected 0 argument(s) for "double
RuleThickness()"; had 2 instead.
                + 3.51 * RuleThickness(gc, dd)
 

It would appear that the function definition should include the argument
(R_GE_gcontext *gc, GEDevDesc *dd), like in the other functions that are defined
around there.