Revision 0:64c04c367702, committed 2015-05-03

Comitter:

tony63

Date:

Sun May 03 22:52:59 2015 +0000

Commit message:

Flotante a caracter para pasar de lotante a caracter uselo con Internet de las cosas

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun May 03 22:52:59 2015 +0000
@@ -0,0 +1,78 @@
+// C program for implementation of ftoa()
+#include "mbed.h"
+#include<stdio.h>
+#include<math.h>
+Serial pc(USBTX,USBRX); 
+// reverses a string 'str' of length 'len'
+// driver program to test above funtion
+
+
+void reverse(char *str, int len)
+{
+    int i=0, j=len-1, temp;
+    while (i<j)
+    {
+        temp = str[i];
+        str[i] = str[j];
+        str[j] = temp;
+        i++; j--;
+    }
+}
+ 
+ // Converts a given integer x to string str[].  d is the number
+ // of digits required in output. If d is more than the number
+ // of digits in x, then 0s are added at the beginning.
+int intToStr(int x, char str[], int d)
+{
+    int i = 0;
+    while (x)
+    {
+        str[i++] = (x%10) + '0';
+        x = x/10;
+    }
+ 
+    // If number of digits required is more, then
+    // add 0s at the beginning
+    while (i < d)
+        str[i++] = '0';
+ 
+    reverse(str, i);
+    str[i] = '\0';
+    return i;
+}
+ 
+// Converts a floating point number to string.
+void ftoa(float n, char *res, int afterpoint)
+{
+    // Extract integer part
+    int ipart = (int)n;
+ 
+    // Extract floating part
+    float fpart = n - (float)ipart;
+ 
+    // convert integer part to string
+    int i = intToStr(ipart, res, 0);
+ 
+    // check for display option after point
+    if (afterpoint != 0)
+    {
+        res[i] = '.';  // add dot
+ 
+        // Get the value of fraction part upto given no.
+        // of points after dot. The third parameter is needed
+        // to handle cases like 233.007
+        float fp=10;
+        fpart =fpart * pow(fp,afterpoint);
+        
+        intToStr((int)fpart, res + i + 1, afterpoint);
+    }
+}
+
+int main()
+{
+    char res[20];
+    float n = 233.007;
+    ftoa(n, res, 4);
+    pc.printf("\n\"%s\"\n", res);
+    return 0;
+} 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun May 03 22:52:59 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/8ab26030e058
\ No newline at end of file