Split most .c files into one per function and flatten file hierarchy

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 21 insertions, 0 deletions

diff --git a/libkeccak_behex_upper.c b/libkeccak_behex_upper.c
new file mode 100644
index 0000000..73a67a1
--- /dev/null
+++ b/libkeccak_behex_upper.c
@@ -0,0 +1,21 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+/**
+ * Convert a binary hashsum to upper case hexadecimal representation
+ * 
+ * @param  output   Output array, should have an allocation size of at least `2 * n + 1`
+ * @param  hashsum  The hashsum to convert
+ * @param  n        The size of `hashsum`
+ */
+void
+libkeccak_behex_upper(char *restrict output, const void *restrict hashsum_, size_t n)
+{
+	const unsigned char *restrict hashsum = hashsum_;
+	output[2 * n] = '\0';
+	while (n--) {
+		output[2 * n + 0] = "0123456789ABCDEF"[(hashsum[n] >> 4) & 15];
+		output[2 * n + 1] = "0123456789ABCDEF"[(hashsum[n] >> 0) & 15];
+	}
+}