Beispiel #1
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// 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")
	}
}
Beispiel #2
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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
}
Beispiel #3
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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)
}
Beispiel #4
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func SetCell(s *data.Slice, comp int, ix, iy, iz int, value float32) {
	SetElem(s, comp, s.Index(ix, iy, iz), value)
}
Beispiel #5
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// Set all elements of all components to zero.
func Zero(s *data.Slice) {
	Memset(s, make([]float32, s.NComp())...)
}
Beispiel #6
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func GetCell(s *data.Slice, comp, ix, iy, iz int) float32 {
	return GetElem(s, comp, s.Index(ix, iy, iz))
}