chore(includes): 添加浮点字面量解析定位插桩 - string.atof 打印长字面量解析中间值(ATOF-DBG); parser._new_const_float 打印构造值/readback/节点覆写监控(NEWF-DBG/OVW-DBG); 用于定位浮点 CDefine 值错误(llc ret i32 0)

includes/string.vp

@@ -365,6 +365,10 @@ def atof(src: str) -> t.CDouble:
         while exp < 0:
             result = result / 10.0
             exp += 1
+    # ATOF-DBG: 打印长浮点字面量解析过程（定位浮点 CDefine 值错误）
+    if src is not None and strlen(src) >= 12:
+        stdio.printf("[ATOF-DBG] src=%s int=%.17g frac=%.17g div=%.17g result=%.17g\n",
+                     src, int_part, frac_part, frac_div, result)
     return result
 
 def split(s: str, delim: str, result: t.CArray[str]) -> int: