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#' Integer type info
#'
#' A list that represents the numerical properties of a integer
#' type.
#'
#' @param dtype dtype to get information from.
#' @concept tensor-attributes
#'
#' @export
torch_iinfo <- function(dtype) {
if (dtype == torch_int32()) {
list(
bits = 32,
max = bit64::as.integer64("2147483647"),
min = bit64::as.integer64("-2147483648")
)
} else if (dtype == torch_int64()) {
list(
bits = 64,
max = bit64::as.integer64("9223372036854775807"),
min = bit64::as.integer64("-9223372036854775808")
)
} else if (dtype == torch_int16()) {
list(
bits = 16,
max = 32767L,
min = -32768L
)
} else {
value_error("dtype must be an integer type.")
}
}
#' Floating point type info
#'
#' A list that represents the numerical properties of a
#' floating point torch.dtype
#'
#' @param dtype dtype to check information
#' @concept tensor-attributes
#'
#' @export
torch_finfo <- function(dtype) {
if (dtype == torch_float32()) {
list(
bits = 32,
max = 3.4028234663852886e+38,
min = -3.4028234663852886e+38,
eps = 1.1920928955078125e-07,
tiny = 1.1754943508222875e-38
)
} else if (dtype == torch_float64()) {
list(
bits = 64,
max = 1.7976931348623157e+308,
min = -1.7976931348623157e+308,
eps = 2.220446049250313e-16,
tiny = 2.2250738585072014e-308
)
} else if (dtype == torch_float16()) {
list(
bits = 16,
max = 65504.0,
min = -65504.0,
eps = 0.0009765625,
tiny = 6.103515625e-05
)
} else {
value_error("dtype must be a float type.")
}
}
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