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-rw-r--r--libaf/filter.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libaf/filter.c b/libaf/filter.c
index 4352a34d7c..a637bb6df3 100644
--- a/libaf/filter.c
+++ b/libaf/filter.c
@@ -274,7 +274,7 @@ int af_filter_design_pfir(unsigned int n, unsigned int k, _ftype_t* w, _ftype_t*
Note that a0 is assumed to be 1, so there is no wrapping
of it.
*/
-void af_filter_prewarp(_ftype_t* a, _ftype_t fc, _ftype_t fs)
+static void af_filter_prewarp(_ftype_t* a, _ftype_t fc, _ftype_t fs)
{
_ftype_t wp;
wp = 2.0 * fs * tan(M_PI * fc / fs);
@@ -310,7 +310,7 @@ void af_filter_prewarp(_ftype_t* a, _ftype_t fc, _ftype_t fs)
Return: On return, set coef z-domain coefficients and k to the gain
required to maintain overall gain = 1.0;
*/
-void af_filter_bilinear(_ftype_t* a, _ftype_t* b, _ftype_t* k, _ftype_t fs, _ftype_t *coef)
+static void af_filter_bilinear(_ftype_t* a, _ftype_t* b, _ftype_t* k, _ftype_t fs, _ftype_t *coef)
{
_ftype_t ad, bd;