Diff: util.cpp

Revision:

0:d38d192c2f5f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util.cpp	Thu Aug 30 13:20:01 2012 +0000
@@ -0,0 +1,46 @@
+/*
+ * (c) Copyright 2012 EVRYTHNG Ltd London / Zurich
+ * www.evrythng.com
+ *
+ * --- DISCLAIMER ---
+ *
+ * EVRYTHNG provides this source code "as is" and without warranty of any kind,
+ * and hereby disclaims all express or implied warranties, including without
+ * limitation warranties of merchantability, fitness for a particular purpose,
+ * performance, accuracy, reliability, and non-infringement.
+ *
+ * Author: Michel Yerly
+ *
+ */
+#include "util.h"
+
+Serial dbg(USBTX, USBRX);
+
+
+void sprinti64(char* dest, int64_t v, char** end)
+{
+    int len;
+    if (v != 0x8000000000000000LL) {
+        char str[20];
+        int p = sizeof(str);
+        str[--p] = '\0';
+        str[p-1] = '0';
+        bool neg = false;
+        if (v < 0) {
+            v = -v;
+            neg = true;
+        }
+        while (v > 0) {
+            str[--p] = '0' + (v % 10);
+            v /= 10;
+        }
+        if (neg) {
+            str[--p] = '-';
+        }
+        len = sizeof(str) - p;
+        strncpy(dest, str + p, len);
+    } else {
+        len = 20;
+        strncpy(dest, "-9223372036854775808", len);
+    }    *end = dest + len;
+}
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