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[/] [ft816float/] [trunk/] [rtl/] [verilog/] [fpSize.sv] - Rev 84
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// This file contains defintions for fields to ease dealing with different fp
// widths. Some of the code still needs to be modified to support widths
// other than standard 32,64 or 80 bit.
localparam MSB = WID-1;
localparam EMSB = WID==128 ? 14 :
WID==96 ? 14 :
WID==84 ? 14 :
WID==80 ? 14 :
WID==64 ? 10 :
WID==52 ? 10 :
WID==48 ? 10 :
WID==44 ? 10 :
WID==42 ? 10 :
WID==40 ? 9 :
WID==32 ? 7 :
WID==24 ? 6 : 4;
localparam FMSB = WID==128 ? 111 :
WID==96 ? 79 :
WID==84 ? 67 :
WID==80 ? 63 :
WID==64 ? 51 :
WID==52 ? 39 :
WID==48 ? 35 :
WID==44 ? 31 :
WID==42 ? 29 :
WID==40 ? 28 :
WID==32 ? 22 :
WID==24 ? 15 : 9;
localparam FX = (FMSB+2)*2; // the MSB of the expanded fraction
localparam EX = FX + 1 + EMSB + 1 + 1 - 1;
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