Encoding:

Format:

MAX_U.df 

MAX_U.B wd,ws,wt

MAX_U.H wd,ws,wt

MAX_U.W wd,ws,wt

MAX_U.D wd,ws,wt

Purpose:

Vector Unsigned Maximum

Vector and vector unsigned maximum.

Description:

wd[i] = max(ws[i], wt[i])

ector wt and uns igned elements in vector ws are written to

Maximum values between unsigned elements in v vector wd.

The operands and results are values in integer data format df.

Restrictions:

No data-dependent exceptions are possible.

Operation:

MAX_U.B
   for i in 0 .. WRLEN/8-1
      WR[wd]8i+7..8i = max_u(WR[ws]8i+7..8i, WR[wt]8i+7..8i, 8)
   endfor
MAX_U.H
   for i in 0 .. WRLEN/16-1
      WR[wd]16i+15..16i = max_u(WR[ws]16i+15..16i, WR[wt]16i+15..16i, 16)
   endfor
MAX_U.W
   for i in 0 .. WRLEN/32-1
      WR[wd]32i+31..32i = max_u(WR[ws]32i+31..32i, WR[wt]32i+31..32i, 32)
   endfor
MAX_U.D
   for i in 0 .. WRLEN/64-1
      WR[wd]64i+63..64i = max_u(WR[ws]64i+63..64i, WR[wt]64i+63..64i, 64)
   endfor
function max_u(ts, tt, n)
   t = 0 || tt
   s = 0 || ts
   if t < s then
      return ts
   else
      return tt
   endif
endfunction max_u

Exceptions:

Reserved Instruction Exception, MSA Disabled Exception.