Encoding:

Format:

SUBVI.df 

SUBVI.B wd,ws,u5

SUBVI.H wd,ws,u5

SUBVI.W wd,ws,u5

SUBVI.D wd,ws,u5

Purpose:

Immediate Subtract

Immediate subtraction from vector.

Description:

wd[i] = ws[i] - u5

The 5-bit immediate unsigned value u5 is subtracted from the elements in v ector ws. The r esult is written to vector wd.

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

Restrictions:

No data-dependent exceptions are possible.

Operation:

SUBVI.B
   t = 03 || u54..0
   for i in 0 .. WRLEN/8-1
      WR[wd]8i+7..8i = WR[ws]8i+7..8i - t
   endfor
SUBVI.H
   t = 011 || u54..0
   for i in 0 .. WRLEN/16-1
      WR[wd]16i+15..16i = WR[ws]16i+15..16i - t
   endfor
SUBVI.W
   t = 027 || u54..0
   for i in 0 .. WRLEN/32-1
      WR[wd]32i+31..32i = WR[ws]32i+31..32i - t
   endfor
SUBVI.D
   t = 059 || u54..0
   for i in 0 .. WRLEN/64-1
      WR[wd]64i+63..64i = WR[ws]64i+63..64i - t
   endfor

Exceptions:

Reserved Instruction Exception, MSA Disabled Exception.