[wasm] Fixed float-to-int conversion tests.

test/cctest/wasm/test-run-wasm.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "src/wasm/wasm-macro-gen.h"
 
@@ skipping 2682 matching lines @@
   {
     WasmRunner<double> r;
     BUILD(r, WASM_F64_MAX(WASM_F64(45.73),
                           WASM_F64(bit_cast<double>(0x7ff000000000f1e2))));
     CHECK_EQ(0x7ff800000000f1e2, bit_cast<uint64_t>(r.Call()));
   }
 }
 
 #endif
 
-// TODO(titzer): Fix and re-enable.
-#if 0
 TEST(Run_Wasm_I32SConvertF32) {
   WasmRunner<int32_t> r(MachineType::Float32());
   BUILD(r, WASM_I32_SCONVERT_F32(WASM_GET_LOCAL(0)));
 
   FOR_FLOAT32_INPUTS(i) {
     if (*i < static_cast<float>(INT32_MAX) &&
         *i >= static_cast<float>(INT32_MIN)) {
       CHECK_EQ(static_cast<int32_t>(*i), r.Call(*i));
     } else {
       CHECK_TRAP32(r.Call(*i));
     }
   }
 }
 
 
 TEST(Run_Wasm_I32SConvertF64) {
   WasmRunner<int32_t> r(MachineType::Float64());
   BUILD(r, WASM_I32_SCONVERT_F64(WASM_GET_LOCAL(0)));
 
   FOR_FLOAT64_INPUTS(i) {
-    if (*i < static_cast<double>(INT32_MAX) &&
-        *i >= static_cast<double>(INT32_MIN)) {
+    if (*i < (static_cast<double>(INT32_MAX) + 1.0) &&
+        *i > (static_cast<double>(INT32_MIN) - 1.0)) {
       CHECK_EQ(static_cast<int64_t>(*i), r.Call(*i));
     } else {
       CHECK_TRAP32(r.Call(*i));
     }
   }
 }
 
 
 TEST(Run_Wasm_I32UConvertF32) {
   WasmRunner<uint32_t> r(MachineType::Float32());
   BUILD(r, WASM_I32_UCONVERT_F32(WASM_GET_LOCAL(0)));
 
   FOR_FLOAT32_INPUTS(i) {
-    if (*i < static_cast<float>(UINT32_MAX) && *i > -1) {
+    if (*i < (static_cast<float>(UINT32_MAX) + 1.0) && *i > -1) {
       CHECK_EQ(static_cast<uint32_t>(*i), r.Call(*i));
     } else {
       CHECK_TRAP32(r.Call(*i));
     }
   }
 }
 
 
 TEST(Run_Wasm_I32UConvertF64) {
   WasmRunner<uint32_t> r(MachineType::Float64());
   BUILD(r, WASM_I32_UCONVERT_F64(WASM_GET_LOCAL(0)));
 
   FOR_FLOAT64_INPUTS(i) {
-    if (*i < static_cast<float>(UINT32_MAX) && *i > -1) {
+    if (*i < (static_cast<float>(UINT32_MAX) + 1.0) && *i > -1) {
       CHECK_EQ(static_cast<uint32_t>(*i), r.Call(*i));
     } else {
       CHECK_TRAP32(r.Call(*i));
     }
   }
 }
-#endif
-
 
 TEST(Run_Wasm_F64CopySign) {
   WasmRunner<double> r(MachineType::Float64(), MachineType::Float64());
   BUILD(r, WASM_F64_COPYSIGN(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
 
   FOR_FLOAT64_INPUTS(i) {
     FOR_FLOAT64_INPUTS(j) { CHECK_DOUBLE_EQ(copysign(*i, *j), r.Call(*i, *j)); }
   }
 }
 
@@ skipping 41 matching lines @@
 
 #if WASM_64
 TEST(Compile_Wasm_CallIndirect_Many_i64) { CompileCallIndirectMany(kAstI64); }
 #endif
 
 
 TEST(Compile_Wasm_CallIndirect_Many_f32) { CompileCallIndirectMany(kAstF32); }
 
 
 TEST(Compile_Wasm_CallIndirect_Many_f64) { CompileCallIndirectMany(kAstF64); }