Changes between Version 3 and Version 4 of IDISA_Vertical
 Timestamp:
 May 6, 2011, 11:27:39 AM (8 years ago)
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IDISA_Vertical
v3 v4 11 11 (natural binary interpretation). 12 12 13 In general, result fields are converted to Nbits by truncation, or 14 signed or unsigned saturation. When the results depend on the 15 interpration t(x) refers to the truncation of a field to the N least 16 significant bits of x, ss(x) refers to conversion by signed 17 saturation and us(x) refers to conversion by unsigned saturation. 18 13 In general, result fields are converted to Nbits by truncation. 19 14 20 15 == IDISA Binary Operations == … … 51 46  l(a,,i,,) = a,,i,, & (1 << N/2  1) 52 47 48 Some operations also involve an immediate shift operand supplied 49 as template parameter `<k>`: these shift all fields by the same 50 constant amount. 51 53 52  `abs`  absolute value  r,,i,, = if s(a,,i,,) < 0 then a,,i,, else a,,i,,  54 53  `neg`  negate  r,,i,, = s(a,,i,,) 