Clash_Sized_Internal_Signed.json

[ { "BlackBox" :
    { "name"      : "Clash.Sized.Internal.Signed.div#"
    , "kind"      : "Declaration"
    , "type"      : "div# :: Signed n -> Signed n -> Signed n"
    , "template"  :
"// divSigned begin
logic ~GENSYM[resultPos][1];
logic ~GENSYM[dividerNeg][2];
logic signed [~SIZE[~TYPO]:0] ~GENSYM[dividend2][3];
logic signed [~SIZE[~TYPO]:0] ~GENSYM[dividendE][4];
logic signed [~SIZE[~TYPO]:0] ~GENSYM[dividerE][5];
logic signed [~SIZE[~TYPO]:0] ~GENSYM[quot_res][6];

assign ~SYM[1] = ~VAR[dividend][0][~SIZE[~TYPO]-1] == ~VAR[divider][1][~SIZE[~TYPO]-1];
assign ~SYM[2] = ~VAR[divider][1][~SIZE[~TYPO]-1] == 1'b1;
assign ~SYM[4] = $signed({{~VAR[dividend][0][~SIZE[~TYPO]-1]},~VAR[dividend][0]});  // sign extension
assign ~SYM[5] = $signed({{~VAR[divider][1][~SIZE[~TYPO]-1]} ,~VAR[divider][1]} );  // sign extension

assign ~SYM[3] = ~SYM[1] ? ~SYM[4]
                         : (~SYM[2] ? (~SYM[4] - ~SYM[5] - ~SIZE[~TYPO]'sd1)
                                    : (~SYM[4] - ~SYM[5] + ~SIZE[~TYPO]'sd1));

assign ~SYM[6] = ~SYM[3] / ~SYM[5];
assign ~RESULT = $signed(~SYM[6][~SIZE[~TYPO]-1:0]);
// divSigned end"
    }
  }
, { "BlackBox" :
    { "name"      : "Clash.Sized.Internal.Signed.mod#"
    , "kind"      : "Declaration"
    , "type"      : "mod# :: Signed n -> Signed n -> Signed n"
    , "template"  :
"// modSigned begin
// remainder
~SIGD[~GENSYM[rem_res][0]][0];
assign ~SYM[0] = ~VAR[dividend][0] % ~VAR[divider][1];

// modulo
assign ~RESULT = (~VAR[dividend][0][~SIZE[~TYPO]-1] == ~VAR[divider][1][~SIZE[~TYPO]-1]) ?
                 ~SYM[0] :
                 (~SYM[0] == ~SIZE[~TYPO]'sd0 ? ~SIZE[~TYPO]'sd0 : ~SYM[0] + ~VAR[divider][1]);
// modSigned end"
    }
  }
, { "BlackBox" :
    { "name"      : "Clash.Sized.Internal.Signed.rotateL#"
    , "kind"      : "Declaration"
    , "type"      : "rotateL# :: KnownNat n => Signed n -> Int -> Signed n"
    , "template"  :
"// rotateL begin
logic [2*~SIZE[~TYPO]-1:0] ~GENSYM[s][0];
assign ~SYM[0] = {~ARG[1],~ARG[1]} << (~ARG[2] % ~SIZE[~TYPO]);
assign ~RESULT = $signed(~SYM[0][2*~SIZE[~TYPO]-1 : ~SIZE[~TYPO]]);
// rotateL end"
    }
  }
, { "BlackBox" :
    { "name"      : "Clash.Sized.Internal.Signed.rotateR#"
    , "kind"      : "Declaration"
    , "type"      : "rotateR# :: KnownNat n => Signed n -> Int -> Signed n"
    , "template"  :
"// rotateR begin
logic [2*~SIZE[~TYPO]-1:0] ~GENSYM[s][0];
assign ~SYM[0] = {~ARG[1],~ARG[1]} >> (~ARG[2] % ~SIZE[~TYPO]);
assign ~RESULT = $signed(~SYM[0][~SIZE[~TYPO]-1 : 0]);
// rotateR end"
    }
  }
]