shithub: ft²

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Update ft2_scopedraw.c

--- a/src/scopes/ft2_scopedraw.c

+++ b/src/scopes/ft2_scopedraw.c

@@ -31,7 +31,7 @@

 	int16_t *ptr16 = scopeIntrpLUT;

 	for (int32_t i = 0; i < SCOPE_INTRP_PHASES; i++)

 	{

-		const float x1 = i * (1.0f / SCOPE_INTRP_PHASES);

+		const float x1 = (float)i * (1.0f / SCOPE_INTRP_PHASES);

 		const float x2 = x1 * x1; // x^2

 		const float x3 = x2 * x1; // x^3

@@ -40,7 +40,7 @@

 		const float t3 = (x1 *  (1.0f/2.0f)) + (x2 * (1.0f/2.0f)) + (x3 * -(1.0f/2.0f)) + (1.0f/6.0f);

 		const float t4 =                                             x3 *  (1.0f/6.0f);

-		// truncate, do not round!

+		// note: truncate, do not round!

 		*ptr16++ = (int16_t)(t1 * SCOPE_INTRP_SCALE); // tap #1 at sample offset -1

 		*ptr16++ = (int16_t)(t2 * SCOPE_INTRP_SCALE); // tap #2 at sample offset  0 (center)

 		*ptr16++ = (int16_t)(t3 * SCOPE_INTRP_SCALE); // tap #3 at sample offset  1

-- 

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