struct_abi_helpers.go RawHistoryFolder

1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: 2026 The Ebitengine Authors
3
4package purego
5
6import (
7	"math"
8	"reflect"
9	"unsafe"
10)
11
12func packFloat32Pair(low, high uintptr) uintptr {
13	return uintptr((uint64(high) << 32) | (uint64(low) & math.MaxUint32))
14}
15
16func highFloat32Bits(word uintptr) uint32 {
17	return uint32(uint64(word) >> 32)
18}
19
20func flushPackedWord(val *uint64, shift *byte, flushed *bool, isFloat bool, addFloat, addInt func(uintptr)) {
21	*flushed = true
22	if isFloat {
23		addFloat(uintptr(*val))
24	} else {
25		addInt(uintptr(*val))
26	}
27	*val = 0
28	*shift = 0
29}
30
31func stableValuePointer(v reflect.Value) (unsafe.Pointer, any) {
32	if v.CanAddr() {
33		return v.Addr().UnsafePointer(), nil
34	}
35	tmp := reflect.New(v.Type())
36	tmp.Elem().Set(v)
37	return tmp.UnsafePointer(), tmp.Interface()
38}