add blake3_version(void) / BLAKE3_VERSION_STRING

related discussion here: https://github.com/BLAKE3-team/BLAKE3/issues/130

2 files changed, 6 insertions, 0 deletions

diff --git a/c/blake3.c b/c/blake3.c
index 741a76d..7abf532 100644
--- a/c/blake3.c
+++ b/c/blake3.c
@@ -5,6 +5,10 @@
 #include "blake3.h"
 #include "blake3_impl.h"
 
+const char * blake3_version(void) {
+  return BLAKE3_VERSION_STRING;
+}
+
 INLINE void chunk_state_init(blake3_chunk_state *self, const uint32_t key[8],
                              uint8_t flags) {
   memcpy(self->cv, key, BLAKE3_KEY_LEN);
diff --git a/c/blake3.h b/c/blake3.h
index 51f1d2a..57ebd5a 100644
--- a/c/blake3.h
+++ b/c/blake3.h
@@ -8,6 +8,7 @@
 extern "C" {
 #endif
 
+#define BLAKE3_VERSION_STRING "0.3.7"
 #define BLAKE3_KEY_LEN 32
 #define BLAKE3_OUT_LEN 32
 #define BLAKE3_BLOCK_LEN 64
@@ -38,6 +39,7 @@ typedef struct {
   uint8_t cv_stack[(BLAKE3_MAX_DEPTH + 1) * BLAKE3_OUT_LEN];
 } blake3_hasher;
 
+const char * blake3_version(void);
 void blake3_hasher_init(blake3_hasher *self);
 void blake3_hasher_init_keyed(blake3_hasher *self,
                               const uint8_t key[BLAKE3_KEY_LEN]);