// Read generates len(p) random bytes from the default [Source] and
// writes them into p. It always returns len(p) and a nil error.
// Read, unlike the [Rand.Read] method, is safe for concurrent use.
//
// Deprecated: For almost all use cases, [crypto/rand.Read] is more appropriate.
// If a deterministic source is required, use [math/rand/v2.ChaCha8.Read].

inline std::vector<int64_t> GetPaddedShape(ArrayRef<int64_t> old_shape,
                                           int new_dims) {
  std::vector<int64_t> new_shape(new_dims, 1);
  std::copy_backward(old_shape.begin(), old_shape.end(), new_shape.end());
  return new_shape;
}

// Helper method that given and 'current_index' representing
// index in broadcasted tensor, get the index in the flat original tensor.

	unlock(&globalRand.lock)
}

// rand32 is uint32(rand()), called from compiler-generated code.
//
//go:nosplit
func rand32() uint32 {
	return uint32(rand())
}

// rand returns a random uint64 from the per-m chacha8 state.
// Do not change signature: used via linkname from other packages.
//
//go:nosplit
//go:linkname rand
func rand() uint64 {
	// Note: We avoid acquirem here so that in the fast path

		}
		if a.Start != b.Start {
			return cmp.Compare(aStart, bStart)
		}
		// Break ties with the end time.
		aEnd, bEnd := parsed.endTime(), parsed.endTime()
		if a.End != nil {
			aEnd = a.End.Time()
		}
		if b.End != nil {
			bEnd = b.End.Time()
		}
		return cmp.Compare(aEnd, bEnd)
	})
}

func defaultGenOpts() *genOpts {
	return &genOpts{
		startTime: time.Duration(0),

  // rank of 2 (no batch dimension).
  SmallVector<int64_t, 2> new_filter_shape(filter_shape.rbegin(),
                                           filter_shape.rend());

  // Construct the value array of transposed filter. Assumes 2D matrix.
  SmallVector<int8_t> new_filter_values(filter_values.size(), /*Value=*/0);
  for (int i = 0; i < filter_shape[0]; ++i) {

func batched(f func([]byte) error, readMax int) func([]byte) error {
	return func(out []byte) error {
		for len(out) > 0 {
			read := len(out)
			if read > readMax {
				read = readMax
			}
			if err := f(out[:read]); err != nil {
				return err
			}
			out = out[read:]
		}
		return nil
	}

}

// New returns a new Rand that uses random values from src
// to generate other random values.
func New(src Source) *Rand {
	return &Rand{src: src}
}

// Int64 returns a non-negative pseudo-random 63-bit integer as an int64.
func (r *Rand) Int64() int64 { return int64(r.src.Uint64() &^ (1 << 63)) }

// Uint32 returns a pseudo-random 32-bit value as a uint32.
func (r *Rand) Uint32() uint32 { return uint32(r.src.Uint64() >> 32) }

//go:build boringcrypto && linux && (amd64 || arm64) && !android && !msan

package boring

// #include "goboringcrypto.h"
import "C"
import "unsafe"

type randReader int

func (randReader) Read(b []byte) (int, error) {
	// Note: RAND_bytes should never fail; the return value exists only for historical reasons.
	// We check it even so.

					if r.eof {
						r.syntaxError()
					}
					c, c1 = c1, r.readByteNoBuf()
				}
				startLine = false

			case '/':
				if startLine {
					// Try to read this as a //go:embed comment.
					for i := range goEmbed {
						c = r.readByteNoBuf()
						if c != goEmbed[i] {
							goto SkipSlashSlash
						}
					}
					c = r.readByteNoBuf()

}

var isTest = false

// unprotect marks the end of a large section of code that accesses the index.
// It should be used as:
//
//	defer unprotect(protect, &err)
//
// end looks for panics due to errCorrupt or bad mmap accesses.
// When it finds them, it adds explanatory text, consumes the panic, and sets *errp instead.
// If errp is nil, end adds the explanatory text but then calls base.Fatalf.