1 files changed, 20 insertions, 0 deletions
diff --git a/include/libmath.h b/include/libmath.h
new file mode 100644
index 0000000..03e8e1a
--- /dev/null
+++ b/include/libmath.h
@@ -0,0 +1,20 @@
+#pragma once
+
+// -----------------------------------------------------------------------
+// Linear algebra
+
+/* 
+ * Vector (double precision)
+ * len : dimension of space
+ * inc : stride to access in buffer
+ * buf : pointer to start of data
+ * NOTE: minimum buffer size MUST be len*inc
+ */
+typedef struct math·Vecd
+{
+    int     len;
+    int     inc;
+    double *buf;
+} math·Vecd;
+
+double linalg·dotd(math·Vecd a, math·Vecd b);