// Memset sets the Slice's components to the specified values.
// To be carefully used on unified slice (need sync)
func Memset(s *data.Slice, val ...float32) {
if Synchronous { // debug
Sync()
timer.Start("memset")
}
util.Argument(len(val) == s.NComp())
for c, v := range val {
cu.MemsetD32Async(cu.DevicePtr(uintptr(s.DevPtr(c))), math.Float32bits(v), int64(s.Len()), stream0)
}
if Synchronous { //debug
Sync()
timer.Stop("memset")
}
}
func GetElem(s *data.Slice, comp int, index int) float32 {
var f float32
src := unsafe.Pointer(uintptr(s.DevPtr(comp)) + uintptr(index)*cu.SIZEOF_FLOAT32)
MemCpyDtoH(unsafe.Pointer(&f), src, cu.SIZEOF_FLOAT32)
return f
}
func SetElem(s *data.Slice, comp int, index int, value float32) {
f := value
dst := unsafe.Pointer(uintptr(s.DevPtr(comp)) + uintptr(index)*cu.SIZEOF_FLOAT32)
MemCpyHtoD(dst, unsafe.Pointer(&f), cu.SIZEOF_FLOAT32)
}
func SetCell(s *data.Slice, comp int, ix, iy, iz int, value float32) {
SetElem(s, comp, s.Index(ix, iy, iz), value)
}
// Set all elements of all components to zero.
func Zero(s *data.Slice) {
Memset(s, make([]float32, s.NComp())...)
}
func GetCell(s *data.Slice, comp, ix, iy, iz int) float32 {
return GetElem(s, comp, s.Index(ix, iy, iz))
}