diff --git a/wasm/imports.wat b/wasm/imports.wat
index 6da1a0b53..ee2a3c277 100644
--- a/wasm/imports.wat
+++ b/wasm/imports.wat
@@ -6,9 +6,9 @@
   (type $Gen_block (sub (array (mut (ref eq)))))
 
 
+  ;; (import "js_runtime" "print_string_mem" (func $print_string_mem (param i32) (param i32)))
+
   (import "js_runtime" "print_string" (func $print_string (param (ref $String))))
-  (import "js_runtime" "print_string_mem"
-    (func $print_string_mem (param i32) (param i32)))
   (import "js_runtime" "print_endline" (func $print_endline))
 
   (import "js_runtime" "print_i32" (func $print_i32 (param i32)))
@@ -18,9 +18,9 @@
   (import "js_runtime" "flush" (func $flush))
   (import "js_runtime" "atan2" (func $atan2 (param f64 f64) (result f64)))
   (import "js_runtime" "sin" (func $sin (param f64) (result f64)))
+  (import "js_runtime" "asin" (func $asin (param f64) (result f64)))
   (import "js_runtime" "cos" (func $cos (param f64) (result f64)))
-
-  (import "js_runtime" "memory" (memory $mem 1))
+  (import "js_runtime" "fmod" (func $fmod (param f64 f64) (result f64)))
 
   (import "runtime" "compare_ints"
     (func $compare_int (param (ref eq)) (param (ref eq)) (result (ref eq))))
@@ -28,6 +28,10 @@
   (import "runtime" "string_eq"
     (func $string_eq (param $a (ref eq)) (param $b (ref eq)) (result (ref eq))))
 
+  ;; (import "js_runtime" "memory"
+          (memory $mem 1)
+  ;; )
+
   (func (export "caml_int64_float_of_bits") (param $x (ref eq)) (result (ref $Float))
     (struct.new $Float
       (f64.reinterpret_i64
@@ -83,6 +87,17 @@
     call $cos
   )
 
+  (func $C_asin (export "asin") (param f64) (result f64)
+    local.get 0
+    call $asin
+  )
+
+  (func $C_fmod (export "fmod") (param f64 f64) (result f64)
+    local.get 1
+    local.get 0
+    call $fmod
+  )
+
   ;; =====
   ;; Bytes
   ;; =====
@@ -668,11 +683,14 @@
 
 )
 
+  (;
   (func (export "print_string") (param $a (ref eq)) (result (ref eq))
     (call $print_string_mem (i32.const 0)
       (call $copy_string (ref.cast (ref $String) (local.get $a))))
     (ref.i31 (i32.const 0)))
 
+;)
+
   (func (export "print_endline") (param $a (ref eq)) (result (ref eq))
     (call $print_endline)
     (ref.i31 (i32.const 0)))
diff --git a/wasm/test/bench.sh b/wasm/test/bench.sh
new file mode 100755
index 000000000..db68d5d5d
--- /dev/null
+++ b/wasm/test/bench.sh
@@ -0,0 +1,62 @@
+#!/bin/sh
+
+set -eu
+
+NODE="node-canary --stack-size=10000"
+
+ulimit -s 20000
+
+#UNSAFE="-unsafe"
+UNSAFE=""
+
+bench() {
+  echo "*** Running ${1}:"
+
+  echo ""
+
+  # clean-up
+  rm -rf *.assets *.wasm *.wat *.bc *.js || true 2> /dev/null
+  # compile native and wasocaml
+  ../../ocamlopt $UNSAFE -O3 ./${2}.ml > /dev/null
+  # optimize wasocaml code
+  wasm-opt --enable-gc --enable-reference-types --enable-multivalue --enable-tail-call --enable-nontrapping-float-to-int --traps-never-happen --skip-pass=inlining-optimizing a.out.wasm -o a.out.wasm -O3
+  # compile bytecode
+  ocamlc $UNSAFE ./${2}.ml -o a.out.bc > /dev/null
+  # compile wsoo
+  wasm_of_ocaml compile --opt=3 ./a.out.bc -o a.wsoo.bc.js > /dev/null
+  # compile jsoo
+  js_of_ocaml compile --target-env=nodejs --opt=3 ./a.out.bc -o a.jsoo.bc.js
+
+  # bench
+  hyperfine --runs 3 \
+    -n "OCaml native" "./a.out" \
+    -n "Wasocaml" "${NODE} ./main_node.mjs" \
+    -n "Wsoo" "${NODE} ./a.wsoo.bc.js" \
+    -n "Jsoo" "${NODE} ./a.jsoo.bc.js" \
+    -n "Bytecode" "ocamlrun ./a.out.bc" # TODO: use ../../ocamlrun when it'll be produced
+
+  echo ""
+}
+
+
+#bench "Almabench" "almabench" # global init must have correct type
+#bench "Binary Trees" "binary_trees" # unreachable
+#bench "Boyer" "boyer" # unreachable
+#bench "Boyer no exceptions" "boyer_no_exc" # unreachable
+#bench "Pfannkuchen" "fannkuch" # unreachable
+#bench "Pfannkuchen 2" "fannkuch2" # missing "caml_string_notequal" and "caml_lessthan"
+#bench "Fast Fourier Transform" "fft" # unreachable
+#bench "Hamming" "hamming" # missing value let-rec
+#bench "Nucleic" "nucleic" # unreachable
+#bench "Ray-Trace" "raytrace" # global init must have correct type
+#bench "Splay Tree" "splay" # unreachable
+
+bench "Knuth-Bendix" "kb"
+bench "Knuth-Bendix (no exception)" "kb_no_exc"
+bench "Soli" "soli"
+bench "Fibonacci" "fib"
+bench "Binary Decision Diagram" "bdd"
+bench "Loop" "loop"
+bench "Takc" "takc"
+bench "Taku" "taku"
+bench "Quicksort" "quicksort"
diff --git a/wasm/test/main_node.mjs b/wasm/test/main_node.mjs
index 04bfaa704..5042f821c 100644
--- a/wasm/test/main_node.mjs
+++ b/wasm/test/main_node.mjs
@@ -57,6 +57,8 @@ const bindings = {
   "memory": memory,
   "atan2": Math.atan2,
   "sin": Math.sin,
+  "asin": Math.asin,
+  "fmod": (x, y) => x % y,
   "cos": Math.cos,
 }
 
diff --git a/wasm/test/test.sh b/wasm/test/test.sh
index 492c9bf06..5690b3ead 100755
--- a/wasm/test/test.sh
+++ b/wasm/test/test.sh
@@ -1,7 +1,102 @@
 #!/bin/sh
 
-../../ocamlopt ./kb.ml
-../../ocamlopt ./soli.ml
-../../ocamlopt ./fib.ml
-# wasm-opt --enable-gc --enable-reference-types --enable-exception-handling --enable-multivalue --enable-tail-call a.out.wasm -o a.out.wasm -O3
-python3 -m http.server 8000 --directory .
+set -eu
+
+ULIMIT_STACK_SIZE=20000
+STACK_SIZE=10000
+NODE="node-canary --stack-size=${STACK_SIZE}"
+
+ulimit -s $ULIMIT_STACK_SIZE
+
+#UNSAFE="-unsafe"
+UNSAFE=""
+
+bench_native() {
+  echo -n "    OCaml native:               "
+  ocamlopt $UNSAFE -O3 ./${2}.ml > /dev/null
+  ./a.out > output_${2}_ocaml_native.txt
+  echo "OK"
+}
+
+bench_wasocaml_opt() {
+  echo -n "    Wasocaml + wasm-opt (node): "
+  ../../ocamlopt $UNSAFE -O3 ./${2}.ml > /dev/null
+  wasm-opt --enable-gc --enable-reference-types --enable-multivalue --enable-tail-call --enable-nontrapping-float-to-int --traps-never-happen --skip-pass=inlining-optimizing a.out.wasm -o a.out.wasm -O3
+  $NODE ./main_node.mjs > output_${2}_wasocaml_opt.txt
+  diff output_${2}_ocaml_native.txt output_${2}_wasocaml_opt.txt
+  echo "OK"
+}
+
+bench_wasocaml() {
+  echo -n "    Wasocaml (node):            "
+  ../../ocamlopt $UNSAFE -O3 ./${2}.ml > /dev/null
+  $NODE ./main_node.mjs > output_${2}_wasocaml.txt
+  diff output_${2}_ocaml_native.txt output_${2}_wasocaml.txt
+  echo "OK"
+}
+
+bench_wsoo() {
+  echo -n "    wasm_of_ocaml (node):       "
+  ocamlc $UNSAFE ./${2}.ml > /dev/null
+  rm -rf a.assets* a.js a.wat || true 2> /dev/null
+  wasm_of_ocaml compile --opt=3 ./a.out > /dev/null
+  $NODE ./a.js > output_${2}_wsoo.txt
+  diff output_${2}_ocaml_native.txt output_${2}_wsoo.txt
+  echo "OK"
+}
+
+bench_jsoo() {
+  echo -n "    js_of_ocaml (node):         "
+  ocamlc $UNSAFE ./${2}.ml > /dev/null
+  rm -f a.js a.wat || true 2> /dev/null
+  js_of_ocaml compile --target-env=nodejs --opt=3 ./a.out
+  $NODE ./a.js > output_${2}_jsoo.txt
+  diff output_${2}_ocaml_native.txt output_${2}_jsoo.txt
+  echo "OK"
+}
+
+bench_bytecode() {
+  echo -n "    OCaml bytecode:             "
+  ocamlc $UNSAFE ./${2}.ml > /dev/null
+  ocamlrun ./a.out > output_${2}_bytecode.txt
+  diff output_${2}_ocaml_native.txt output_${2}_bytecode.txt
+  echo "OK"
+}
+
+bench() {
+  echo "*** Running ${1}:"
+
+  echo ""
+
+  bench_native "${1}" "${2}"
+  bench_wasocaml_opt "${1}" "${2}"
+  bench_wasocaml "${1}" "${2}"
+  bench_wsoo "${1}" "${2}"
+  bench_jsoo "${1}" "${2}"
+  bench_bytecode "${1}" "${2}"
+
+  echo ""
+}
+
+
+#bench "Almabench" "almabench" # global init must have correct type
+#bench "Binary Trees" "binary_trees" # unreachable
+#bench "Boyer" "boyer" # unreachable
+#bench "Boyer no exceptions" "boyer_no_exc" # unreachable
+#bench "Pfannkuchen" "fannkuch" # unreachable
+#bench "Pfannkuchen 2" "fannkuch2" # missing "caml_string_notequal" and "caml_lessthan"
+#bench "Fast Fourier Transform" "fft" # unreachable
+#bench "Hamming" "hamming" # missing value let-rec
+#bench "Nucleic" "nucleic" # unreachable
+#bench "Ray-Trace" "raytrace" # global init must have correct type
+#bench "Splay Tree" "splay" # unreachable
+
+bench "Knuth-Bendix" "kb"
+bench "Knuth-Bendix (no exception)" "kb_no_exc"
+bench "Soli" "soli"
+bench "Fibonacci" "fib"
+bench "Binary Decision Diagram" "bdd"
+bench "Loop" "loop"
+bench "Takc" "takc"
+bench "Taku" "taku"
+bench "Quicksort" "quicksort"
diff --git a/wasm/test/test_node.sh b/wasm/test/test_node.sh
deleted file mode 100755
index d7057b950..000000000
--- a/wasm/test/test_node.sh
+++ /dev/null
@@ -1,98 +0,0 @@
-#!/bin/sh
-
-set -eu
-
-alias time='/usr/bin/time -f"real %e user %U sys %S"'
-
-ULIMIT_STACK_SIZE=20000
-STACK_SIZE=10000
-NODE="node-canary --stack-size=${STACK_SIZE}"
-
-ulimit -s $ULIMIT_STACK_SIZE
-
-#UNSAFE="-unsafe"
-UNSAFE=""
-
-bench_native() {
-  echo -n "    OCaml native:               "
-  ocamlopt $UNSAFE -O3 ./${2}.ml > /dev/null
-  time ./a.out > output_${2}_ocaml_native.txt
-}
-
-bench_wasocaml_opt() {
-  echo -n "    Wasocaml + wasm-opt (node): "
-  ../../ocamlopt $UNSAFE -O3 ./${2}.ml > /dev/null
-  wasm-opt --enable-gc --enable-reference-types --enable-multivalue --enable-tail-call --enable-nontrapping-float-to-int --traps-never-happen --skip-pass=inlining-optimizing a.out.wasm -o a.out.wasm -O3
-  time $NODE ./main_node.mjs > output_${2}_wasocaml_opt.txt
-  diff output_${2}_ocaml_native.txt output_${2}_wasocaml_opt.txt
-}
-
-bench_wasocaml() {
-  echo -n "    Wasocaml (node):            "
-  ../../ocamlopt $UNSAFE -O3 ./${2}.ml > /dev/null
-  time $NODE ./main_node.mjs > output_${2}_wasocaml.txt
-  diff output_${2}_ocaml_native.txt output_${2}_wasocaml.txt
-}
-
-bench_wsoo() {
-  echo -n "    wasm_of_ocaml (node):       "
-  ocamlc $UNSAFE ./${2}.ml > /dev/null
-  rm -rf a.assets* a.js a.wat || true 2> /dev/null
-  wasm_of_ocaml compile --opt=3 ./a.out > /dev/null
-  time $NODE ./a.js > output_${2}_wsoo.txt
-  diff output_${2}_ocaml_native.txt output_${2}_wsoo.txt
-}
-
-bench_jsoo() {
-  echo -n "    js_of_ocaml (node):         "
-  ocamlc $UNSAFE ./${2}.ml > /dev/null
-  rm -f a.js a.wat || true 2> /dev/null
-  js_of_ocaml compile --target-env=nodejs --opt=3 ./a.out
-  time $NODE ./a.js > output_${2}_jsoo.txt
-  diff output_${2}_ocaml_native.txt output_${2}_jsoo.txt
-}
-
-bench_bytecode() {
-  echo -n "    OCaml bytecode:             "
-  ocamlc $UNSAFE ./${2}.ml > /dev/null
-  time ocamlrun ./a.out > output_${2}_bytecode.txt
-  diff output_${2}_ocaml_native.txt output_${2}_bytecode.txt
-}
-
-bench() {
-  echo "*** Running ${1}:"
-
-  echo ""
-
-  bench_native "${1}" "${2}"
-  bench_wasocaml_opt "${1}" "${2}"
-  #bench_wasocaml "${1}" "${2}"
-  bench_wsoo "${1}" "${2}"
-  bench_jsoo "${1}" "${2}"
-  bench_bytecode "${1}" "${2}"
-
-  echo ""
-}
-
-
-#bench "Almabench" "almabench" # global init must have correct type
-#bench "Binary Trees" "binary_trees" # unreachable
-#bench "Boyer" "boyer" # unreachable
-#bench "Boyer no exceptions" "boyer_no_exc" # unreachable
-#bench "Pfannkuchen" "fannkuch" # unreachable
-#bench "Pfannkuchen 2" "fannkuch2" # missing "caml_string_notequal" and "caml_lessthan"
-#bench "Fast Fourier Transform" "fft" # unreachable
-#bench "Hamming" "hamming" # missing value let-rec
-#bench "Nucleic" "nucleic" # unreachable
-#bench "Ray-Trace" "raytrace" # global init must have correct type
-#bench "Splay Tree" "splay" # unreachable
-
-bench "Knuth-Bendix" "kb"
-bench "Knuth-Bendix (no exception)" "kb_no_exc"
-bench "Soli" "soli"
-bench "Fibonacci" "fib"
-bench "Binary Decision Diagram" "bdd"
-bench "Loop" "loop"
-bench "Takc" "takc"
-bench "Taku" "taku"
-bench "Quicksort" "quicksort"