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|
package tensor
import (
"unsafe"
)
// FillValue returns the value used to fill the invalid entries of a masked array
func (t *Dense) FillValue() interface{} {
switch t.Dtype() {
case Bool:
return true
case Int:
return int(999999)
case Int8:
return int8(99)
case Int16:
return int16(9999)
case Int32:
return int32(999999)
case Int64:
return int64(999999)
case Uint:
return uint(999999)
case Byte:
return byte(99)
case Uint8:
return uint8(99)
case Uint16:
return uint16(9999)
case Uint32:
return uint32(999999)
case Uint64:
return uint64(999999)
case Float32:
return float32(1.0e20)
case Float64:
return float64(1.0e20)
case Complex64:
return complex64(1.0e20 + 0i)
case Complex128:
return complex128(1.0e20 + 0i)
case String:
return `N/A`
case Uintptr:
return uintptr(0x999999)
case UnsafePointer:
return unsafe.Pointer(nil)
default:
return nil
}
}
// Filled returns a tensor with masked data replaced by default fill value,
// or by optional passed value
func (t *Dense) Filled(val ...interface{}) (interface{}, error) {
tc := t.Clone().(*Dense)
if !t.IsMasked() {
return tc, nil
}
fillval := t.FillValue()
if len(val) > 0 {
fillval = val[0]
}
switch {
case tc.IsScalar():
if tc.mask[0] {
tc.Set(0, fillval)
}
case tc.IsRowVec() || tc.IsColVec():
sliceList := t.FlatMaskedContiguous()
for i := range sliceList {
tt, err := tc.Slice(nil, sliceList[i])
if err != nil {
ts := tt.(*Dense)
ts.Memset(fillval)
}
}
default:
it := IteratorFromDense(tc)
for i, _, err := it.NextInvalid(); err == nil; i, _, err = it.NextInvalid() {
tc.Set(i, fillval)
}
}
return tc, nil
}
// FilledInplace replaces masked data with default fill value,
// or by optional passed value
func (t *Dense) FilledInplace(val ...interface{}) (interface{}, error) {
if !t.IsMasked() {
return t, nil
}
fillval := t.FillValue()
if len(val) > 0 {
fillval = val[0]
}
switch {
case t.IsScalar():
if t.mask[0] {
t.Set(0, fillval)
}
case t.IsRowVec() || t.IsColVec():
sliceList := t.FlatMaskedContiguous()
for i := range sliceList {
tt, err := t.Slice(nil, sliceList[i])
if err != nil {
ts := tt.(*Dense)
ts.Memset(fillval)
}
}
default:
it := IteratorFromDense(t)
for i, _, err := it.NextInvalid(); err == nil; i, _, err = it.NextInvalid() {
t.Set(i, fillval)
}
}
return t, nil
}
|
