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Changed DIVN comparison from NF to NF+2. Shouldn't make a difference on our word sizes of XLEN=32/64, NF = 10/23/52) but is more proper in the general case.

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David Harris 2023-05-15 03:51:59 -07:00
parent 0a7a159d69
commit 1b385c4336
1 changed files with 2 additions and 2 deletions
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config/shared/wally-shared.vh
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@ -98,7 +98,7 @@
`define FLEN (`Q_SUPPORTED ? `Q_LEN : `D_SUPPORTED ? `D_LEN : `F_SUPPORTED ? `S_LEN : `H_LEN)
`define NE (`Q_SUPPORTED ? `Q_NE : `D_SUPPORTED ? `D_NE : `F_SUPPORTED ? `S_NE : `H_NE)
`define NF (`Q_SUPPORTED ? `Q_NF : `D_SUPPORTED ? `D_NF : `F_SUPPORTED ? `S_NF : `H_NF)
`define FMT (`Q_SUPPORTED ? 2'd3 : `D_SUPPORTED ? 2'd1 : `F_SUPPORTED ? 2'd0 : 2'd2)
`define FMT (`Q_SUPPORTED ? 2'd3 : `D_SUPPORTED ? 2'd1 : `F_SUPPORTED ? 2'd0 : 2'd2)
`define BIAS (`Q_SUPPORTED ? `Q_BIAS : `D_SUPPORTED ? `D_BIAS : `F_SUPPORTED ? `S_BIAS : `H_BIAS)*/
// Floating point constants needed for FPU paramerterization
@ -125,7 +125,7 @@
// division constants
`define DIVN (((`NF<`XLEN) & `IDIV_ON_FPU) ? `XLEN : `NF+2) // standard length of input
`define DIVN ((((`NF+2)<`XLEN) & `IDIV_ON_FPU) ? `XLEN : `NF+2) // standard length of input
`define LOGR ($clog2(`RADIX)) // r = log(R)
`define RK (`LOGR*`DIVCOPIES) // r*k used for intdiv preproc
`define LOGRK ($clog2(`RK)) // log2(r*k)