refactor dependencies; include dependencies source code

1 files changed, 44 insertions, 0 deletions

diff --git a/source/kit/lower_bound.h b/source/kit/lower_bound.h
new file mode 100644
index 0000000..2ee04b9
--- /dev/null
+++ b/source/kit/lower_bound.h
@@ -0,0 +1,44 @@
+#ifndef KIT_LOWER_BOUND_H
+#define KIT_LOWER_BOUND_H
+
+#include "types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define KIT_LOWER_BOUND_INL(return_val, size, ...) \
+  do {                                             \
+    i64 position_ = 0;                             \
+    i64 count_    = (size);                        \
+    while (count_ > 0) {                           \
+      i64 delta_ = count_ / 2;                     \
+      i64 index_ = position_ + delta_;             \
+      if (__VA_ARGS__) {                           \
+        position_ += delta_ + 1;                   \
+        count_ -= delta_ + 1;                      \
+      } else                                       \
+        count_ = delta_;                           \
+    }                                              \
+    (return_val) = position_;                      \
+  } while (0)
+
+#define KIT_LOWER_BOUND(return_val, array, value, op) \
+  KIT_LOWER_BOUND_INL(return_val, (array).size,       \
+                      (op) ((array).values[index_], (value)))
+
+#define KIT_LOWER_BOUND_REF(return_val, array, value, op) \
+  KIT_LOWER_BOUND_INL(return_val, (array).size,           \
+                      (op) ((array).values + index_, (value)))
+
+#ifdef __cplusplus
+}
+#endif
+
+#ifndef KIT_DISABLE_SHORT_NAMES
+#  define LOWER_BOUND_INL KIT_LOWER_BOUND_INL
+#  define LOWER_BOUND KIT_LOWER_BOUND
+#  define LOWER_BOUND_REF KIT_LOWER_BOUND_REF
+#endif
+
+#endif