UP 添加字符串转浮点

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.27)
 project(HW_Lib CXX C)
 
 set(CMAKE_C_STANDARD 23)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")  #设置c++的编译选项
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++23")  #设置c++的编译选项
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")  #设置c的编译选项
 include_directories(
         lib/inc

lib/inc/tool.h

@@ -47,6 +47,7 @@ typedef enum {  // 定义枚举类型Type_t，包含不同数据类型
     float *:6,double *:10,      \
     default: ((void)0))
 
+
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))  // 计算数组的元素个数
 #define in ,  // 定义逗号为in
 #define _foreach(e, a) for(size_t e = 0; e < ARRAY_SIZE(a); e++)  // 实现foreach宏，遍历数组a，e为当前元素下标
@@ -82,7 +83,7 @@ typedef enum {  // 定义枚举类型Type_t，包含不同数据类型
  * @param   I_Max: [输入]    数据最大值
  * @param   O_Min: [输入]    需求最小值
  * @param   O_Max: [输入]    需求最小值
- * @retval    需求处理值
+ * @return    需求处理值
  * @example Mapping(128,0,4096,0.0,3.3) //0.10
  *            ADC采集引脚电压
  **/
@@ -111,6 +112,14 @@ float Mapping(float val, float I_Min, float I_Max, float O_Min, float O_Max);
  **/
 void BufPrint(char *name, void *buf, Type_t type, unsigned int len, unsigned char frame);
 
+/**
+ * @brief   字符串转浮点数
+ * @param   str: [输入]     输入的字符串
+ * @return  float          转换后的浮点数
+ * @example Str2Float("3.14");
+ **/
+float Str2Float(char *str);
+
 /**
  * @brief   数组内容打印
  * @param   arr: [输入]     标识名数组

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));
+}

main.c

@@ -5,6 +5,7 @@
 #include "t_iic.h"
 #include "t_task.h"
 #include "t_arg.h"
+#include "tool.h"
 #include <time.h>
 
 void Test(char *name, void (*pFunction)()) {
@@ -24,11 +25,27 @@ void Test(char *name, void (*pFunction)()) {
     printf("\n------< %s END >------\n", name);
 }
 
+#define END "\n"
+#define TYPE_F(v) _Generic((v), \
+char :"[char]-> "#v"=%c" END,           \
+short :"[short]-> "#v"=%d" END,         \
+int :"[int]-> "#v"=%d" END,             \
+float :"[float]-> "#v"=%.2f" END ,       \
+double :"[double]-> "#v"=%.2f" END,     \
+default: "[err]-> "#v"=%p" END)
+#define POUT(s) printf(TYPE_F(s) ,s)
+
 int main() {
-    srand((unsigned)time(NULL));
-    Test("SPI", Test_spi);
-    Test("IIC", Test_iic);
-    Test("ArgPase", Test_argpase);
-    Test("Task", Test_task);
+    srand((unsigned) time(NULL));
+    int i = 1;
+    POUT((++i) + (++i));
+
+    char str[] = "123.456";
+    float result = Str2Float(str);
+    printf("Result: %.3f\n", result);
+//    Test("SPI", Test_spi);
+//    Test("IIC", Test_iic);
+//    Test("ArgPase", Test_argpase);
+//    Test("Task", Test_task);
     return 0;
 }