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Date: Fri, 1 Jul 2011 21:12:15 +0300
Message-ID: <BANLkTinrOAihDo1B_uTbWccdOKfFXs7ujw@mail.gmail.com>
Subject: Re: gcc-4.4: conflicting types for built-in function 'cabs' and 'cabsf'
From: Ozkan Sezer <sezeroz AT gmail DOT com>
To: djgpp-workers AT delorie DOT com
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On Fri, Jul 1, 2011 at 8:53 PM, DJ Delorie <dj AT delorie DOT com> wrote:
>
>> Old gcc?
>
> Do we really want to support gcc older than 2.95 ?
>

I guess not.

Quick'n'dirty patch below. Tested comqilation using gcc-3.3.6
and 4.4.7.  (Can't test anything older than 3.3 at the moment.)
If OK, use it and abuse it.

Index: w_cabs.c
===================================================================
RCS file: /cvs/djgpp/djgpp/src/libm/math/w_cabs.c,v
retrieving revision 1.3
diff -u -p -r1.3 w_cabs.c
--- w_cabs.c	14 Dec 1999 12:01:34 -0000	1.3
+++ w_cabs.c	1 Jul 2011 18:01:44 -0000
@@ -9,18 +9,8 @@

 #include "fdlibm.h"

-struct complex {
-	double x;
-	double y;
-};
-
-#ifdef __STDC__
-double cabs(struct complex);
-double cabs(struct complex z)
-#else
-double cabs(z)
-     struct complex z;
-#endif
+double cabs(double _Complex);
+double cabs(double _Complex z)
 {
-	return hypot(z.x, z.y);
+	return hypot(__real__ z, __imag__ z);
 }
Index: wf_cabs.c
===================================================================
RCS file: /cvs/djgpp/djgpp/src/libm/math/wf_cabs.c,v
retrieving revision 1.3
diff -u -p -r1.3 wf_cabs.c
--- wf_cabs.c	14 Dec 1999 12:01:34 -0000	1.3
+++ wf_cabs.c	1 Jul 2011 18:01:44 -0000
@@ -9,18 +9,8 @@

 #include "fdlibm.h"

-struct complex {
-	float x;
-	float y;
-};
-
-#ifdef __STDC__
-float cabsf(struct complex);
-float cabsf(struct complex z)
-#else
-float cabsf(z)
-	struct complex z;
-#endif
+float cabsf(float _Complex);
+float cabsf(float _Complex z)
 {
-	return hypotf(z.x, z.y);
+	return hypotf(__real__ z, __imag__ z);
 }


--
O.S.