Add square wave and fix lowpass styling

1 files changed, 17 insertions, 26 deletions

diff --git a/src/lowpass.h b/src/lowpass.h
index 6c99212..0f50683 100644
--- a/src/lowpass.h
+++ b/src/lowpass.h
@@ -4,43 +4,34 @@
 
 /* FILTER INFORMATION STRUCTURE FOR FILTER ROUTINES */
 
-#define FILTER_SECTIONS   2   /* 2 filter sections for 24 db/oct filter */
+#define FILTER_SECTIONS   2            /* 2 filter sections for 24 db/oct filter */
 
 typedef struct {
-    unsigned int length;       /* size of filter */
-    float history[2 * FILTER_SECTIONS];    /* history in filter */
-    float *coef;               /* pointer to coefficients of filter */
+  unsigned int length;                 /* size of filter */
+  float history[2 * FILTER_SECTIONS];  /* history in filter */
+  float *coef;                         /* pointer to coefficients of filter */
 } FILTER;
 
 typedef struct {
-        double a0, a1, a2;       /* numerator coefficients */
-        double b0, b1, b2;       /* denominator coefficients */
+  double a0, a1, a2;           /* numerator coefficients */
+  double b0, b1, b2;           /* denominator coefficients */
 } BIQUAD;
 
 static BIQUAD ProtoCoef[FILTER_SECTIONS];      /* Filter prototype coefficients,
-                                                     1 for each filter section */
+                                                  1 for each filter section */
 
-void szxform(
-    double *a0, double *a1, double *a2,     /* numerator coefficients */
-    double *b0, double *b1, double *b2,   /* denominator coefficients */
-    double fc,           /* Filter cutoff frequency */
-    double fs,           /* sampling rate */
-    double *k,           /* overall gain factor */
-    float *coef);         /* pointer to 4 iir coefficients */
+void szxform(double *a0, double *a1, double *a2, /* numerator coefficients */
+             double *b0, double *b1, double *b2, /* denominator coefficients */
+             double fc,                          /* Filter cutoff frequency */
+             double fs,                          /* sampling rate */
+             double *k,                          /* overall gain factor */
+             float *coef);                       /* pointer to 4 iir coefficients */
 
 
+signed char lpf_init();
+void lpf_close();
+float lpf_filter(float input);
+void lpf_update(float resonance, float cutoff, int samplerate);
 
-#ifdef __cplusplus
-	extern "C" {
-#endif
-
-	signed char LowPass_Init();
-	void		LowPass_Close();
-	float		LowPass_Filter(float input);
-	void		LowPass_Update(float resonance, float cutoff, int samplerate);
-
-#ifdef __cplusplus
-	}
-#endif
 
 #endif