w < 2 { panic("w must be at least 2 by the definition of NAF") } else if w > 8 { panic("NAF digits must fit in int8") } var naf [256]int8 var digits [5]uint64 for i := 0; i < 4; i++ { digits[i] = byteorder.LEUint64(b[i*8:]) } width := uint64(1 << w) windowMask := uint64(width - 1) pos := uint(0) carry := uint64(0) for pos < 256 { indexU64 := pos / 64 indexBit := pos % 64 var bitBuf uint64 if indexBit < 64-w { // This window's bits are contained in a single u64 bitBuf = digits[indexU64] >> indexBit...

pkg fmt, type ScanState interface, Read([]uint8) (int, error)
pkg fmt, type ScanState interface, ReadRune() (int32, int, error)
pkg fmt, type ScanState interface, SkipSpace()
pkg fmt, type ScanState interface, Token(bool, func(int32) bool) ([]uint8, error)
pkg fmt, type ScanState interface, UnreadRune() error
pkg fmt, type ScanState interface, Width() (int, bool)

<p>
For <a href="#Numeric_types">unsigned integer</a> values, the operations <code>+</code>,
<code>-</code>, <code>*</code>, and <code>&lt;&lt;</code> are
computed modulo 2<sup><i>n</i></sup>, where <i>n</i> is the bit width of
the unsigned integer's type.
Loosely speaking, these unsigned integer operations
discard high bits upon overflow, and programs may rely on "wrap around".
</p>

<p>