From edd8ff2c0778d97808869488cc7394151456c4ca Mon Sep 17 00:00:00 2001 From: Xiretza Date: Tue, 21 Apr 2020 12:51:58 +0200 Subject: Add flooring division operator The $div and $mod cells use truncating division semantics (rounding towards 0), as defined by e.g. Verilog. Another rounding mode, flooring (rounding towards negative infinity), can be used in e.g. VHDL. The new $divfloor cell provides this flooring division. This commit also fixes the handling of $div in opt_expr, which was previously optimized as if it was $divfloor. --- backends/btor/test_cells.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'backends/btor') diff --git a/backends/btor/test_cells.sh b/backends/btor/test_cells.sh index e8d35acf8..3f077201a 100644 --- a/backends/btor/test_cells.sh +++ b/backends/btor/test_cells.sh @@ -6,7 +6,7 @@ rm -rf test_cells.tmp mkdir -p test_cells.tmp cd test_cells.tmp -../../../yosys -p 'test_cell -n 5 -w test all /$alu /$fa /$lcu /$lut /$sop /$macc /$mul /$div /$mod /$modfloor' +../../../yosys -p 'test_cell -n 5 -w test all /$alu /$fa /$lcu /$lut /$sop /$macc /$mul /$div /$mod /$divfloor /$modfloor' for fn in test_*.il; do ../../../yosys -p " -- cgit v1.2.3