def nan_to_num(g, input, nan, posinf, neginf):
from torch.onnx.symbolic_opset9 import isnan, lt, gt, logical_and
# Cannot create a int type tensor with inf/nan values, so we simply
# return the original tensor
if not sym_help._is_fp(input):
return input
input_dtype = sym_help.pytorch_name_to_type[input.type().scalarType()]
if nan is None:
nan = 0.0
nan_cond = isnan(g, input)
nan_result = g.op("Where", nan_cond,
g.op("Constant", value_t=torch.tensor([nan], dtype=input_dtype)), input)
# For None values of posinf, neginf we use the greatest/lowest finite
# value representable by input’s dtype.
finfo = torch.finfo(input_dtype)
if posinf is None:
posinf = finfo.max
posinf_cond = logical_and(g, isinf(g, nan_result),
gt(g, nan_result, g.op("Constant", value_t=torch.LongTensor([0]))))
nan_posinf_result = g.op("Where", posinf_cond,
g.op("Constant", value_t=torch.tensor([posinf], dtype=input_dtype)), nan_result)
if neginf is None:
neginf = finfo.min
neginf_cond = logical_and(g, isinf(g, nan_posinf_result),
lt(g, nan_posinf_result, g.op("Constant", value_t=torch.LongTensor([0]))))
return g.op("Where", neginf_cond,
g.op("Constant", value_t=torch.tensor([neginf], dtype=input_dtype)), nan_posinf_result)
def nan_to_num(g, input, nan, posinf, neginf):
# Cannot create a int type tensor with inf/nan values, so we simply
# return the original tensor
if not symbolic_helper._is_fp(input):
return input
input_dtype = _type_utils.JitScalarType.from_name(
input.type().scalarType()).dtype()
if nan is None:
nan = 0.0
nan_cond = opset9.isnan(g, input)
nan_result = g.op(
"Where",
nan_cond,
g.op("Constant", value_t=torch.tensor([nan], dtype=input_dtype)),
input,
)
# For None values of posinf, neginf we use the greatest/lowest finite
# value representable by input’s dtype.
finfo = torch.finfo(input_dtype)
if posinf is None:
posinf = finfo.max
posinf_cond = opset9.logical_and(
g,
isinf(g, nan_result),
opset9.gt(g, nan_result, g.op("Constant",
value_t=torch.LongTensor([0]))),
)
nan_posinf_result = g.op(
"Where",
posinf_cond,
g.op("Constant", value_t=torch.tensor([posinf], dtype=input_dtype)),
nan_result,
)
if neginf is None:
neginf = finfo.min
neginf_cond = opset9.logical_and(
g,
isinf(g, nan_posinf_result),
opset9.lt(g, nan_posinf_result,
g.op("Constant", value_t=torch.LongTensor([0]))),
)
return g.op(
"Where",
neginf_cond,
g.op("Constant", value_t=torch.tensor([neginf], dtype=input_dtype)),
nan_posinf_result,
)