From 07e18043145f3d91c8ea7ec3ad41b3c905585277 Mon Sep 17 00:00:00 2001 From: Ethan Werner 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/bollinger_bands.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 test/bollinger_bands.c (limited to 'test/bollinger_bands.c') diff --git a/test/bollinger_bands.c b/test/bollinger_bands.c new file mode 100644 index 0000000..37bc138 --- /dev/null +++ b/test/bollinger_bands.c @@ -0,0 +1,22 @@ +#include +#include +#include "ts.h" + +bool ts_test_bollinger_bands( void ) +{ + fp_t const x[] = { 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 }; + fp_t const * const inp[1] = { x }; + + /* k=3, std_mult=2 */ + /* SMA: 11, 12, 13, 14, 15, 16, 17, 18 */ + /* SD: sqrt(2/3)=0.81650 for all windows */ + /* Upper = SMA + 2*SD, Lower = SMA - 2*SD */ + fp_t const em[] = { 11, 12, 13, 14, 15, 16, 17, 18 }; + fp_t const eu[] = { 12.632993, 13.632993, 14.632993, 15.632993, 16.632993, 17.632993, 18.632993, 19.632993 }; + fp_t const el[] = { 9.367007, 10.367007, 11.367007, 12.367007, 13.367007, 14.367007, 15.367007, 16.367007 }; + fp_t const * const exp[3] = { em, eu, el }; + + typedef struct { uint_t k; fp_t std_mult; } c_t; + c_t c = { .k = 3, .std_mult = 2.0 }; + return ts_test(ts_bollinger_bands, ts_bollinger_bands_offset, inp, exp, sizeof( x ) / sizeof( *x ), (ts_constant_t *)&c, &ts_bollinger_bands_p); +} -- cgit v1.3.1