def __trunc_sat_s(z, n):
if math.isnan(z):
return 0
min_value = -(int64(1) << (n - 1))
max_value = (int64(1) << (n - 1)) - 1
if z == -math.inf:
return min_value
if math.isinf(z):
return max_value
x = math.trunc(z)
if x < float64(min_value):
return min_value
elif x >= float64(max_value):
return max_value
else:
return int64(x)
def pop_f64(self):
val = self.pop_numeric()
try:
val = struct.unpack('>d', struct.pack('>q', val))[0]
except struct.error:
val = struct.unpack('>d', struct.pack('>Q', val))[0]
return float64(val)
def wrap_u64(vt, val):
if vt == ValTypeI32:
return int32(val)
elif vt == ValTypeI64:
return int64(val)
elif vt == ValTypeF32:
val = struct.unpack('>f', struct.pack('>l', int64(val)))[0]
return float32(val)
elif vt == ValTypeF64:
val = struct.unpack('>d', struct.pack('>q', int64(val)))[0]
return float64(val)
else:
raise Exception("unreachable")
def __trunc_sat_u(z, n):
if math.isnan(z):
return 0
if z == -math.inf:
return 0
max_value = (uint64(1) << n) - 1
if math.isinf(z):
return max_value
x = math.trunc(z)
if x < 0:
return 0
elif x >= float64(max_value):
return max_value
else:
return uint64(x)
def f64_const(vm, args):
vm.push_f64(float64(args))
def f64_promote_f32(vm, _):
vm.push_f64(float64(vm.pop_f32()))
def f64_convert_i64u(vm, _):
vm.push_f64(float64(vm.pop_u64()))
def f64_convert_i64s(vm, _):
vm.push_f64(float64(vm.pop_s64()))
def f64_convert_i32u(vm, _):
vm.push_f64(float64(vm.pop_u32()))
def f64_convert_i32s(vm, _):
vm.push_f64(float64(vm.pop_s32()))