UP 添加字符串转浮点

lib/src/tool.cpp

@@ -42,4 +42,32 @@ void BufPrint(char *name, void *buf, Type_t type, unsigned int len, unsigned cha
         }
     }
     printf("\n");
-}
+}
+
+float Str2Float(char *str) {
+    int integer = 0;
+    double decimal = 0;
+    int sign = 1;
+    int decimalFlag = 0;
+    int decimalWeight = 1;
+    if (*str == '-') {
+        sign = -1;
+        str++;
+    }
+    while (*str != '\0') {
+        if (*str == '.') {
+            decimalFlag = 1;
+            str++;
+            continue;
+        }
+        if (!decimalFlag) {
+            integer = integer * 10 + (*str - '0');
+        } else {
+            decimal = decimal * 10 + (*str - '0');
+            decimalWeight *= 10;
+        }
+        str++;
+    }
+    decimal /= decimalWeight;
+    return float(sign * (integer + decimal));
+}