initial commit: ts time series analysis library v0.1.0

- 354 financial and mathematical time-series indicators
- Uniform C11 API with consistent function signatures
- 349 passing tests with -Werror
- Static and shared library builds
- pkg-config integration
- Python bindings
- Fuzzing and sanitizer support
- Security hardening flags

1 files changed, 39 insertions, 0 deletions

diff --git a/test/volume_delta.c b/test/volume_delta.c
new file mode 100644
index 0000000..42a4c87
--- /dev/null
+++ b/test/volume_delta.c
@@ -0,0 +1,39 @@
+#include <stddef.h>
+#include "ts.h"
+
+bool ts_test_volume_delta( void )
+{
+    fp_t const o[] = { 10, 11, 12, 13, 14 };
+    fp_t const h[] = { 12, 13, 14, 15, 16 };
+    fp_t const l[] = { 8,  9,  10,  11,  12 };
+    fp_t const c[] = { 11, 12, 13, 14,  15 };
+    fp_t const v[] = { 100, 200, 300, 400, 500 };
+
+    fp_t const * const x[] = { o, h, l, c, v };
+
+    fp_t e[5] = { 0 };
+    for( uint_t i = 0; i < 5; ++i )
+    {
+        fp_t hl = h[i] - l[i];
+        if( hl == 0 )
+        {
+            e[i] = 0;
+        }
+        else if( c[i] > o[i] )
+        {
+            fp_t buy_vol = v[i] * ( c[i] - l[i] ) / hl;
+            fp_t sell_vol = v[i] - buy_vol;
+            e[i] = buy_vol - sell_vol;
+        }
+        else if( c[i] < o[i] )
+        {
+            fp_t sell_vol = v[i] * ( h[i] - c[i] ) / hl;
+            fp_t buy_vol = v[i] - sell_vol;
+            e[i] = buy_vol - sell_vol;
+        }
+    }
+
+    fp_t const * const e_arr[1] = { e };
+
+    return ts_test(ts_volume_delta, ts_volume_delta_offset, x, e_arr, 5, (ts_constant_t *)NULL, &ts_volume_delta_p);
+}