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_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 i64_trunc_f64s(vm, _):
f = math.trunc(vm.pop_f64())
if f >= __MaxInt64 or f < __MinInt64:
raise ErrIntOverflow
if math.isnan(f):
raise ErrConvertToInt
vm.push_s64(int64(f))
def i64_const(vm, args):
vm.push_s64(int64(args))
def i64_extend_32s(vm, _):
vm.push_s64(int64(int32(vm.pop_s64())))
def i64_extend_16s(vm, _):
vm.push_s64(int64(int16(vm.pop_s64())))
def i64_extend_8s(vm, _):
vm.push_s64(int64(int8(vm.pop_s64())))
def i64_extend_i32s(vm, _):
vm.push_s64(int64(vm.pop_s32()))
def pop_s64(self) -> int64:
return int64(self.pop_numeric())
def i64_load_32s(vm, mem_arg):
val = read_u32(vm, mem_arg)
vm.push_s64(int64(int32(val)))
def i64_load_16s(vm, mem_arg):
val = read_u16(vm, mem_arg)
vm.push_s64(int64(int16(val)))
def i64_load_8s(vm, mem_arg):
val = read_u8(vm, mem_arg)
vm.push_s64(int64(int8(val)))