Lean and mean initial commit

Not much functionality yet

1 files changed, 22 insertions, 0 deletions

diff --git a/fmt_asn1sintpayload.c b/fmt_asn1sintpayload.c
new file mode 100644
index 0000000..257135e
--- /dev/null
+++ b/fmt_asn1sintpayload.c
@@ -0,0 +1,22 @@
+#include "asn1.h"
+
+size_t fmt_asn1sintpayload(char* dest,signed long l) {
+  size_t needed=sizeof l,i;
+  signed long tmp=0x7f;
+  if (l>=0) return fmt_asn1intpayload(dest,l);
+  for (i=1; i<needed; ++i) {
+    /* assumes two's complement */
+    if ((l|tmp) == -1)
+      break;
+    tmp=(tmp<<8)|0xff;
+  }
+  if (dest) {
+    size_t j=i;
+    while (j) {
+      --j;
+      *dest=(l>>(j*8))&0xff;
+      ++dest;
+    }
+  }
+  return i;
+}