diff options
Diffstat (limited to 'lib/bollinger_width.c')
| -rw-r--r-- | lib/bollinger_width.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/bollinger_width.c b/lib/bollinger_width.c index d9bca25..00891ce 100644 --- a/lib/bollinger_width.c +++ b/lib/bollinger_width.c @@ -23,7 +23,7 @@ ts_parameter_t const ts_bollinger_width_p = { .n_inputs = 1, .n_outputs = 1, .n_ uint_t ts_bollinger_width_offset( ts_constant_t const *c ) { ( void )c; - return ( c ? ((ts_bollinger_width_params_t *)c)->k - 1 : 0 ); + return ( c ? ((ts_bollinger_width_params_t const *)c)->k > 0 ? ((ts_bollinger_width_params_t const *)c)->k - 1 : 0 : 0 ); } int ts_bollinger_width( @@ -34,10 +34,11 @@ int ts_bollinger_width( { TS_PROLOGUE( ts_bollinger_width_p ); if ( !c ) return -1; - uint_t k = ((ts_bollinger_width_params_t *)c)->k; + TS_CHECK_INPUT(x, x_n, n); + uint_t k = ((ts_bollinger_width_params_t const *)c)->k; if (k == 0 || n < k) return -1; - fp_t std_mult = ((ts_bollinger_width_params_t *)c)->std_mult; - if (isnan(std_mult) || isinf(std_mult)) return -1; + fp_t std_mult = ((ts_bollinger_width_params_t const *)c)->std_mult; + if (std_mult < 0 || isnan(std_mult) || isinf(std_mult)) return -1; for( uint_t i = k - 1; i < n; ++i ) { |