; /****************************************************************************
; * Notes:
; *
-; * This implementation makes use of 16 bit fixed point verio of two multiply
+; * This implementation makes use of 16 bit fixed point version of two multiply
; * constants:
; * 1. sqrt(2) * cos (pi/8)
-; * 2. sqrt(2) * sin (pi/8)
-; * Becuase the first constant is bigger than 1, to maintain the same 16 bit
-; * fixed point prrcision as the second one, we use a trick of
+; * 2. sqrt(2) * sin (pi/8)
+; * Because the first constant is bigger than 1, to maintain the same 16 bit
+; * fixed point precision as the second one, we use a trick of
; * x * a = x + x*(a-1)
; * so
; * x * sqrt(2) * cos (pi/8) = x + x * (sqrt(2) *cos(pi/8)-1).
; *
-; * For the second constant, becuase of the 16bit version is 35468, which
-; * is bigger than 32768, in signed 16 bit multiply, it become a negative
+; * For the second constant, because of the 16bit version is 35468, which
+; * is bigger than 32768, in signed 16 bit multiply, it becomes a negative
; * number.
; * (x * (unsigned)35468 >> 16) = x * (signed)35468 >> 16 + x
; *