[glib] gtypes.h: Make G_MININTn literals negative

[Mikhail Zabaluev <mzabaluev src gnome org>]

commit 05aafe2cff5aab63c6c8d51261549b395f54bca6
Author: Mikhail Zabaluev <mikhail zabaluev gmail com>
Date:   Wed Oct 14 08:10:38 2015 +0300

    gtypes.h: Make G_MININTn literals negative
    
    This is more friendly to the GIR scanner; with previous definitions,
    the constant values end up out of range for their stated integer type.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=756550

 glib/gtypes.h |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/glib/gtypes.h b/glib/gtypes.h
index 0e73b40..5b7a95e 100644
--- a/glib/gtypes.h
+++ b/glib/gtypes.h
@@ -58,19 +58,19 @@ typedef float   gfloat;
 typedef double  gdouble;
 
 /* Define min and max constants for the fixed size numerical types */
-#define G_MININT8      ((gint8)  0x80)
+#define G_MININT8      ((gint8) -0x80)
 #define G_MAXINT8      ((gint8)  0x7f)
 #define G_MAXUINT8     ((guint8) 0xff)
 
-#define G_MININT16     ((gint16)  0x8000)
+#define G_MININT16     ((gint16) -0x8000)
 #define G_MAXINT16     ((gint16)  0x7fff)
 #define G_MAXUINT16    ((guint16) 0xffff)
 
-#define G_MININT32     ((gint32)  0x80000000)
+#define G_MININT32     ((gint32) -0x80000000)
 #define G_MAXINT32     ((gint32)  0x7fffffff)
 #define G_MAXUINT32    ((guint32) 0xffffffff)
 
-#define G_MININT64     ((gint64) G_GINT64_CONSTANT(0x8000000000000000))
+#define G_MININT64     ((gint64) G_GINT64_CONSTANT(-0x8000000000000000))
 #define G_MAXINT64     G_GINT64_CONSTANT(0x7fffffffffffffff)
 #define G_MAXUINT64    G_GINT64_CONSTANT(0xffffffffffffffffU)