Bug 72100: added macros for the maximum and minimum values of PRInt8,

PRUint8, PRInt16, PRUint16, PRInt32, and PRUint32. r=jkeiser.

nsprpub/pr/include/prtypes.h

@@ -279,6 +279,18 @@ typedef signed char PRInt8;
 #error No suitable type for PRInt8/PRUint8
 #endif
 
+/************************************************************************
+ * MACROS:      PR_INT8_MAX
+ *              PR_INT8_MIN
+ *              PR_UINT8_MAX
+ * DESCRIPTION:
+ *  The maximum and minimum values of a PRInt8 or PRUint8.
+************************************************************************/
+
+#define PR_INT8_MAX 127
+#define PR_INT8_MIN (-128)
+#define PR_UINT8_MAX 255U
+
 /************************************************************************
 ** TYPES:       PRUint16
 **              PRInt16
@@ -292,6 +304,18 @@ typedef short PRInt16;
 #error No suitable type for PRInt16/PRUint16
 #endif
 
+/************************************************************************
+ * MACROS:      PR_INT16_MAX
+ *              PR_INT16_MIN
+ *              PR_UINT16_MAX
+ * DESCRIPTION:
+ *  The maximum and minimum values of a PRInt16 or PRUint16.
+************************************************************************/
+
+#define PR_INT16_MAX 32767
+#define PR_INT16_MIN (-32768)
+#define PR_UINT16_MAX 65535U
+
 /************************************************************************
 ** TYPES:       PRUint32
 **              PRInt32
@@ -312,6 +336,18 @@ typedef long PRInt32;
 #error No suitable type for PRInt32/PRUint32
 #endif
 
+/************************************************************************
+ * MACROS:      PR_INT32_MAX
+ *              PR_INT32_MIN
+ *              PR_UINT32_MAX
+ * DESCRIPTION:
+ *  The maximum and minimum values of a PRInt32 or PRUint32.
+************************************************************************/
+
+#define PR_INT32_MAX PR_INT32(2147483647)
+#define PR_INT32_MIN (-PR_INT32_MAX - 1)
+#define PR_UINT32_MAX PR_UINT32(4294967295)
+
 /************************************************************************
 ** TYPES:       PRUint64
 **              PRInt64