symfpu: Verifying rounding modes

Works for everything but muladd.
Which I saw coming, but am still frustrated by.

tests/symfpu/run-test.sh

@@ -3,63 +3,40 @@ set -eu
 
 source ../gen-tests-makefile.sh
 
-# operators
-ops="sqrt add sub mul div muladd"
-for op in $ops; do
-    rm -f ${op}_edges.*
-done
+rm -f *_edges.*
 
-prove_op() {
+prove_rm() {
     op=$1
-    defs=$2
-    ys_file=${op}_edges.ys
+    rm=$2
+    defs=$3
+    ys_file=${op}_${rm}_edges.ys
     echo """\
-symfpu -op $op
+symfpu -op $op -rm $rm
 sat -prove-asserts -verify
 chformal -remove
 opt
 
-read_verilog -sv -formal $defs edges.sv
+read_verilog -sv -formal $defs -D${rm} edges.sv
 chformal -lower
 prep -top edges -flatten
-sat -prove-asserts -verify
+sat -set-assumes -prove-asserts -verify
 """ > $ys_file
 }
 
+prove_op() {
+    op=$1
+    defs=$2
+    rms="RNE RNA RTP RTN RTZ"
+    for rm in $rms; do
+        prove_rm $op $rm "$defs"
+    done
+}
+
 prove_op sqrt "-DSQRT"
 prove_op add "-DADD -DADDSUB -DADDS"
 prove_op sub "-DSUB -DADDSUB -DADDS"
 prove_op mul "-DMUL -DMULS"
 prove_op div "-DDIV"
-prove_op muladd "-DMULADD -DMULS -DADDS"
-
-# rounding modes
-rms="RNE RNA RTP RTN RTZ"
-for rm in $rms; do
-    rm -f ${rm}_edges.*
-done
-
-prove_rm() {
-    rm=$1
-    defs=$2
-    ys_file=${rm}_edges.ys
-    echo """\
-symfpu -rm $rm
-sat -prove-asserts -verify
-chformal -remove
-opt
-
-read_verilog -sv -formal $defs edges.sv
-chformal -lower
-prep -top edges -flatten
-sat -prove-asserts -verify
-""" > $ys_file
-}
-
-prove_rm RNE "-DRNE"
-prove_rm RNA "-DRNA"
-prove_rm RTP "-DRTP"
-prove_rm RTN "-DRTN"
-prove_rm RTZ "-DRTZ"
+# prove_op muladd "-DMULADD -DMULS -DADDS"
 
 generate_mk --yosys-scripts