github.com/aavshr/aws-sdk-go@v1.41.3/internal/sdkrand/read_1_5.go (about)

     1  //go:build !go1.6
     2  // +build !go1.6
     3  
     4  package sdkrand
     5  
     6  import "math/rand"
     7  
     8  // Read backfills Go 1.6's math.Rand.Reader for Go 1.5
     9  func Read(r *rand.Rand, p []byte) (n int, err error) {
    10  	// Copy of Go standard libraries math package's read function not added to
    11  	// standard library until Go 1.6.
    12  	var pos int8
    13  	var val int64
    14  	for n = 0; n < len(p); n++ {
    15  		if pos == 0 {
    16  			val = r.Int63()
    17  			pos = 7
    18  		}
    19  		p[n] = byte(val)
    20  		val >>= 8
    21  		pos--
    22  	}
    23  
    24  	return n, err
    25  }