X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2FSDCCval.h;h=5348ec9814b1ad8371d97178268f8123a830fe8c;hb=c18a4cebda9c0f424821db515901d7357ea233a7;hp=17c4ba4a3df5597857a05dca0383bdc2d0ede3c1;hpb=f61f15d2fcba8d632ad59335615fb1fa4bdcdf6c;p=fw%2Fsdcc

diff --git a/src/SDCCval.h b/src/SDCCval.h
index 17c4ba4a..5348ec98 100644
--- a/src/SDCCval.h
+++ b/src/SDCCval.h
@@ -20,23 +20,45 @@
   You are forbidden to forbid anyone else to use, share and improve
   what you give them.   Help stamp out software-hoarding!  
 -------------------------------------------------------------------------*/
-#include "SDCCsymt.h"
 #ifndef SDCCVAL_H
 #define SDCCVAL_H
 
+#include "SDCCsymt.h"
+
+
+/* double to unsigned long conversion */
+/*
+ * See ISO/IEC 9899, chapter 6.3.1.4 Real floating and integer:
+ * If the value of the integral part cannot be represented by the integer type, the behavior is undefined.
+ * This shows up on Mac OS X i386 platform
+ */
+#if defined(__APPLE__) && defined(__i386__)
+#define double2ul(val)  (((val) < 0) ? (unsigned long) -((long) -(val)) : (unsigned long) (val))
+#else
+#define double2ul(val)  ((unsigned long) (val))
+#endif
+
 /* value wrapper */
 typedef struct value
   {
-    char name[SDCC_NAME_MAX + 1];	/* operand accessing this value */
-    sym_link *type;		/* start of type chain     */
-    sym_link *etype;		/* end of type chain       */
-    symbol *sym;		/* Original Symbol         */
-    struct value *next;		/* used in initializer list */
-    unsigned vArgs:1;		/* arg list ended with variable arg           */
+    char name[SDCC_NAME_MAX + 1]; /* operand accessing this value     */
+    sym_link *type;               /* start of type chain              */
+    sym_link *etype;              /* end of type chain                */
+    symbol *sym;                  /* Original Symbol                  */
+    struct value *next;           /* used in initializer list         */
+    unsigned vArgs:1;             /* arg list ended with variable arg */
 
   }
 value;
 
+typedef struct literalList
+{
+    double    literalValue;
+    unsigned  count;
+    struct literalList *next;
+} literalList;
+
+
 enum
   {
     INIT_NODE,
@@ -49,10 +71,11 @@ typedef struct initList
   {
     int type;
     int lineno;
+    char *filename;
     union
       {
-	struct ast *node;
-	struct initList *deep;
+        struct ast *node;
+        struct initList *deep;
       }
     init;
 
@@ -60,21 +83,40 @@ typedef struct initList
   }
 initList;
 
-#define  IS_VARG(x)		(x->vArgs)
+/* return values from checkConstantRange */
+typedef enum
+  {
+    CCR_OK,           /* evaluate at runtime */
+    CCR_OVL,
+    CCR_ALWAYS_FALSE,
+    CCR_ALWAYS_TRUE
+  }
+CCR_RESULT;
+
+#define  IS_VARG(x)             (x->vArgs)
 
 /* forward definitions for the symbol table related functions */
 void initValue ();
 value *newValue ();
-value *constVal (char *);
+value *constVal (const char *);
 value *reverseVal (value *);
 value *reverseValWithType (value *);
 value *copyValue (value *);
 value *copyValueChain (value *);
-value *strVal (char *);
-value *charVal (char *);
+value *strVal (const char *);
+value *charVal (const char *);
 value *symbolVal (symbol *);
 void printVal (value *);
 double floatFromVal (value *);
+unsigned long ulFromVal (value *);
+
+/* convert a fixed16x16 type to double */
+double doubleFromFixed16x16(TYPE_TARGET_ULONG value);
+
+/* convert a double type to fixed16x16 */
+TYPE_TARGET_ULONG fixed16x16FromDouble(double value);
+
+CCR_RESULT checkConstantRange (sym_link *var, sym_link *lit, int op, bool exchangeOps);
 value *array2Ptr (value *);
 value *valUnaryPM (value *);
 value *valComplement (value *);
@@ -96,12 +138,15 @@ initList *copyIlist (initList *);
 double list2int (initList *);
 value *list2val (initList *);
 struct ast *list2expr (initList *);
-void resolveIvalSym (initList *);
+void resolveIvalSym (initList *, sym_link *);
 value *valFromType (sym_link *);
 value *constFloatVal (char *);
+value *constFixed16x16Val (char *);
 int getNelements (sym_link *, initList *);
 value *valForArray (struct ast *);
 value *valForStructElem (struct ast *, struct ast *);
 value *valForCastAggr (struct ast *, sym_link *, struct ast *, int);
 value *valForCastArr (struct ast * , sym_link *);
+bool convertIListToConstList(initList *src, literalList **lList);
+literalList *copyLiteralList(literalList *src);
 #endif