diff options
Diffstat (limited to 'internal/intconv')
| -rw-r--r-- | internal/intconv/intconv.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/internal/intconv/intconv.go b/internal/intconv/intconv.go index 8d3ac9c6..ab9d5c63 100644 --- a/internal/intconv/intconv.go +++ b/internal/intconv/intconv.go @@ -77,3 +77,12 @@ func SignExtendByteToUint32(b byte) uint32 { return 0xFFFFFF00 | uint32(b) } + +// Uint32ToUint8 converts v to uint8, returning an error if it overflows. +func Uint32ToUint8(v uint32) (uint8, error) { + if v > math.MaxUint8 { + return 0, fmt.Errorf("intconv: uint32 %d overflows uint8", v) + } + + return uint8(v), nil +} |