From 07e18043145f3d91c8ea7ec3ad41b3c905585277 Mon Sep 17 00:00:00 2001
From: Ethan Werner <mail@ethanwerner.com>
Date: Wed, 1 Jul 2026 09:42:39 +0400
Subject: 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
---
 test/cumulative_volume_delta.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 test/cumulative_volume_delta.c

(limited to 'test/cumulative_volume_delta.c')

diff --git a/test/cumulative_volume_delta.c b/test/cumulative_volume_delta.c
new file mode 100644
index 0000000..024b8b5
--- /dev/null
+++ b/test/cumulative_volume_delta.c
@@ -0,0 +1,27 @@
+#include <stddef.h>
+#include "ts.h"
+
+bool ts_test_cumulative_volume_delta( void )
+{
+    fp_t const o[] = { 10, 11, 12, 11, 12, 10, 11, 13, 12, 14 };
+    fp_t const h[] = { 12, 13, 14, 12, 14, 11, 12, 15, 14, 16 };
+    fp_t const l[] = { 8,  9,  10,  9,  10,  9,  10,  11,  10,  12 };
+    fp_t const c[] = { 11, 12, 10, 11, 11, 10, 12, 14, 13, 15 };
+    fp_t const v[] = { 100, 200, 300, 400, 500, 300, 200, 400, 300, 500 };
+
+    fp_t const * const x[] = { o, h, l, c, v };
+
+    fp_t e[10] = { 0 };
+    fp_t cum = 0;
+    for( uint_t i = 0; i < 10; ++i )
+    {
+        fp_t diff = c[i] - o[i];
+        fp_t sign = ( diff > 0 ) ? 1.0 : ( diff < 0 ) ? -1.0 : 0.0;
+        cum += v[i] * sign;
+        e[i] = cum;
+    }
+
+    fp_t const * const e_arr[1] = { e };
+
+    return ts_test(ts_cumulative_volume_delta, ts_cumulative_volume_delta_offset, x, e_arr, 10, (ts_constant_t *)NULL, &ts_cumulative_volume_delta_p);
+}
-- 
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