4 files changed, 36 insertions, 34 deletions

diff --git a/algorithm_output_size.c b/algorithm_output_size.c
index ffba6d8..c91c23d 100644
--- a/algorithm_output_size.c
+++ b/algorithm_output_size.c
@@ -8,14 +8,4 @@
  * @param   algorithm  The hashing algorithm
  * @return             The number of bytes in the output, zero on error
  */
-size_t
-libsha1_algorithm_output_size(enum libsha1_algorithm algorithm)
-{
-	switch (algorithm) {
-	case LIBSHA1_0: return 20;
-	case LIBSHA1_1: return 20;
-	default:
-		errno = EINVAL;
-		return 0;
-	}
-}
+extern inline size_t libsha1_algorithm_output_size(enum libsha1_algorithm);
diff --git a/hmac_state_output_size.c b/hmac_state_output_size.c
index 68e5ed2..71be1b2 100644
--- a/hmac_state_output_size.c
+++ b/hmac_state_output_size.c
@@ -8,8 +8,4 @@
  * @param   state  The state
  * @return         The number of bytes in the output, zero on error
  */
-size_t
-libsha1_hmac_state_output_size(const struct libsha1_hmac_state *restrict state)
-{
-	return libsha1_algorithm_output_size(state->sha1_state.algorithm);
-}
+extern inline size_t libsha1_hmac_state_output_size(const struct libsha1_hmac_state *restrict);
diff --git a/libsha1.h b/libsha1.h
index 7e8e596..9865b3b 100644
--- a/libsha1.h
+++ b/libsha1.h
@@ -1,7 +1,8 @@
 /* See LICENSE file for copyright and license details. */
 #ifndef LIBSHA1_H
-#define LIBSHA1_H  1
+#define LIBSHA1_H 1
 
+#include <errno.h>
 #include <stdint.h>
 #include <stddef.h>
 
@@ -118,26 +119,41 @@ __attribute__((__leaf__, __nothrow__, __nonnull__))
 int libsha1_init(struct libsha1_state *restrict, enum libsha1_algorithm);
 
 /**
- * Get the output size of the algorithm specified for a state
+ * Get the output size of an algorithm
  * 
- * @param   state  The state
- * @return         The number of bytes in the output, zero on error
+ * @param   algorithm  The hashing algorithm
+ * @return             The number of bytes in the output, zero on error
  */
 #if defined(__GNUC__)
-__attribute__((__nothrow__, __nonnull__, __pure__))
+__attribute__((__warn_unused_result__, __nothrow__))
 #endif
-size_t libsha1_state_output_size(const struct libsha1_state *restrict);
+inline size_t
+libsha1_algorithm_output_size(enum libsha1_algorithm algorithm__)
+{
+	switch (algorithm__) {
+	case LIBSHA1_0: return 20;
+	case LIBSHA1_1: return 20;
+	default:
+		errno = EINVAL;
+		return 0;
+	}
+}
 
 /**
- * Get the output size of an algorithm
+ * Get the output size of the algorithm specified for a state
  * 
- * @param   algorithm  The hashing algorithm
- * @return             The number of bytes in the output, zero on error
+ * @param   state  The state
+ * @return         The number of bytes in the output, zero on error
  */
 #if defined(__GNUC__)
-__attribute__((__leaf__, __nothrow__, __const__))
+__attribute__((__warn_unused_result__, __nothrow__, __nonnull__))
 #endif
-size_t libsha1_algorithm_output_size(enum libsha1_algorithm);
+inline size_t
+libsha1_state_output_size(const struct libsha1_state *restrict state__)
+{
+	return libsha1_algorithm_output_size(state__->algorithm);
+}
+
 
 /**
  * Absorb more of the message
@@ -261,9 +277,13 @@ int libsha1_hmac_init(struct libsha1_hmac_state *restrict, enum libsha1_algorith
  * @return         The number of bytes in the output, zero on error
  */
 #if defined(__GNUC__)
-__attribute__((__nothrow__, __nonnull__, __pure__))
+__attribute__((__warn_unused_result__, __nothrow__, __nonnull__))
 #endif
-size_t libsha1_hmac_state_output_size(const struct libsha1_hmac_state *restrict);
+inline size_t
+libsha1_hmac_state_output_size(const struct libsha1_hmac_state *restrict state__)
+{
+	return libsha1_algorithm_output_size(state__->sha1_state.algorithm);
+}
 
 /**
  * Feed data into the HMAC algorithm
diff --git a/state_output_size.c b/state_output_size.c
index 3b3d14d..c148a44 100644
--- a/state_output_size.c
+++ b/state_output_size.c
@@ -8,8 +8,4 @@
  * @param   state  The state
  * @return         The number of bytes in the output, zero on error
  */
-size_t
-libsha1_state_output_size(const struct libsha1_state *restrict state)
-{
-	return libsha1_algorithm_output_size(state->algorithm);
-}
+extern inline size_t libsha1_state_output_size(const struct libsha1_state *restrict state);