bits-fmtscan refactor, part two

1 files changed, 15 insertions, 0 deletions

diff --git a/src/libstddjb/uint640_scan_base_max.c b/src/libstddjb/uint640_scan_base_max.c
new file mode 100644
index 0000000..5487f98
--- /dev/null
+++ b/src/libstddjb/uint640_scan_base_max.c
@@ -0,0 +1,15 @@
+/* ISC license. */
+
+#include <errno.h>
+
+#include <skalibs/uint64.h>
+#include <skalibs/fmtscan.h>
+
+size_t uint640_scan_base_max (char const *s, uint64_t *u, uint8_t base, uint64_t max)
+{
+  size_t pos = uint640_scan_base_max(s, u, base, max) ;
+  if (!pos) return (errno = EINVAL, 0) ;
+  if (!s[pos]) return pos ;
+  errno = fmtscan_num(s[pos], base) < base ? ERANGE : EINVAL ;
+  return 0 ;
+}