Bug 384244 - Updating dtoa from David M. Gay's latest code, and refactoring to

accept patches from this upstream source more easily. r=mrbkap, r=igor

js/src/jsapi.cpp

@@ -741,6 +741,8 @@ JS_NewRuntime(uint32 maxbytes)
     JS_INIT_CLIST(&rt->trapList);
     JS_INIT_CLIST(&rt->watchPointList);
 
+    if (!js_InitDtoa())
+        goto bad;
     if (!js_InitGC(rt, maxbytes))
         goto bad;
     if (!js_InitAtomState(rt))

js/src/jsdtoa.h

@@ -123,7 +123,8 @@ JS_dtobasestr(int base, double d);
  * Clean up any persistent RAM allocated during the execution of DtoA
  * routines, and remove any locks that might have been created.
  */
-extern void js_FinishDtoa(void);
+JS_FRIEND_API(JSBool) js_InitDtoa(void);
+JS_FRIEND_API(void) js_FinishDtoa(void);
 
 JS_END_EXTERN_C
 

js/src/jsnum.cpp

@@ -1015,18 +1015,10 @@ js_strtod(JSContext *cx, const jschar *s, const jschar *send,
     } else {
         int err;
         d = JS_strtod(cstr, &estr, &err);
-        if (err == JS_DTOA_ENOMEM) {
+        if (d == HUGE_VAL)
-            JS_ReportOutOfMemory(cx);
+            d = *cx->runtime->jsPositiveInfinity;
-            if (cstr != cbuf)
+        else if (d == -HUGE_VAL)
-                JS_free(cx, cstr);
+            d = *cx->runtime->jsNegativeInfinity;
-            return JS_FALSE;
-        }
-        if (err == JS_DTOA_ERANGE) {
-            if (d == HUGE_VAL)
-                d = *cx->runtime->jsPositiveInfinity;
-            else if (d == -HUGE_VAL)
-                d = *cx->runtime->jsNegativeInfinity;
-        }
 #ifdef HPUX
         if (d == 0.0 && negative) {
             /*