1 files changed, 0 insertions, 48 deletions
diff --git a/core/math.c b/core/math.c
deleted file mode 100644
index f962534..0000000
--- a/core/math.c
+++ /dev/null
@@ -1,48 +0,0 @@
-#include "math.h"
-
-
-float to_float(uint8_t x) 
-{
-	return (1.0f/127.0f)*(((float)x)-127.0f);
-}
-
-
-//float ph_ch( uint8_t i1, uint8_t q1, uint8_t i2, uint8_t q2)
-float ph_ch( uint8_t i1, uint8_t q1 )
-{
-	static float complex last=0.0+0.0i;
-	float out;
-	float complex xy,c1;
-	//float c2;
-
-	c1 = to_float(i1) + I*to_float(q1);
-	//c1 = CMPLXF( to_float(i1), to_float(q1) );
-	//c2 = to_float(i2) + I*to_float(q2);
-	//c2 = CMPLXF( to_float(i2), to_float(q2) );
-	xy = conjf(last)*c1;
-	out = cargf( xy );
-	last = c1;
-
-	return out;
-}
-
-void rotate_90(uint8_t *buf, uint32_t len)
-/* 90 rotation is 1+0j, 0+1j, -1+0j, 0-1j
-   or [0, 1, -3, 2, -4, -5, 7, -6] */
-{
-	uint32_t i;
-	uint8_t tmp;
-	for (i=0; i<len; i+=8) {
-		/* uint8_t negation = 255 - x */
-		tmp = 255 - buf[i+3];
-		buf[i+3] = buf[i+2];
-		buf[i+2] = tmp;
-
-		buf[i+4] = 255 - buf[i+4];
-		buf[i+5] = 255 - buf[i+5];
-
-		tmp = 255 - buf[i+6];
-		buf[i+6] = buf[i+7];
-		buf[i+7] = tmp;
-	}
-}
-\ No newline at end of file