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--- guides:fixedpoint [2011/07/17 18:03] – created fsphil
+++ guides:fixedpoint [2011/07/17 19:28] (current) – [Fixed-point integer to String] fsphil
@@ Line 59: / Line 59: @@
 </code>
-===== Fixed-point integer to String =====
+===== Fixed-point integer to string =====
+<code c>#include <stdio.h>
+#include <stdint.h>
+const char *fptostr(char *s, size_t n, int32_t value, int8_t dp)
+{
+        int32_t sh;
+        char i, neg;
+        neg = value < 0;
+        if(neg) value = -value;
+        for(sh = 1, i = 0; i < dp; i++) sh *= 10;
+        snprintf(s, n, "%s%u.%0*u",
+                (neg ? "-" : ""),
+                value / sh, dp,
+                value % sh);
+        return(s);
+}
+</code>