From 64aa82592c6c2b043d8c62100d4ce110bf616c1e Mon Sep 17 00:00:00 2001
From: James Barnett <noreply@jamesbarnett.xyz>
Date: Sun, 6 Oct 2019 12:56:26 +0100
Subject: Add os statusbar. Start stdlib

---
 os/stdlib/stdlib.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 os/stdlib/stdlib.c

(limited to 'os/stdlib/stdlib.c')

diff --git a/os/stdlib/stdlib.c b/os/stdlib/stdlib.c
new file mode 100644
index 0000000..465e978
--- /dev/null
+++ b/os/stdlib/stdlib.c
@@ -0,0 +1,21 @@
+char* int_to_str(int i)
+{
+  // Room for 4 byte int, -ve sign and null terminator
+  static char buf[12];
+  char *p = buf + 11;	// points to null terminator
+  if (i >= 0) {
+    do {
+      *--p = '0' + (i % 10);
+      i /= 10;
+    } while (i != 0);
+    return p;
+  }
+  else {
+    do {
+      *--p = '0' - (i % 10);
+      i /= 10;
+    } while (i != 0);
+    *--p = '-';
+  }
+  return p;
+}
\ No newline at end of file
-- 
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