// license that can be found in the LICENSE file.

// Test that the implementation catches nil ptr indirection
// in a large address space.

//go:build aix

package main

import "unsafe"

// Having a big address space means that indexing
// at a 1G + 256 MB offset from a nil pointer might not
// cause a memory access fault. This test checks
// that Go is doing the correct explicit checks to catch

// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build s390x && !math_big_pure_go

package big

import (
	"testing"
)

// Tests whether the non vector routines are working, even when the tests are run on a
// vector-capable machine

func TestFunVVnovec(t *testing.T) {
	if hasVX {
		for _, a := range sumVV {

// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// The standard Linux sigset type on big-endian 64-bit machines.

//go:build linux && (ppc64 || s390x)

package runtime

const (
	_SS_DISABLE  = 2
	_NSIG        = 65
	_SIG_BLOCK   = 0
	_SIG_UNBLOCK = 1
	_SIG_SETMASK = 2
)

type sigset uint64

	}
	return int32(ret64), nil
}

var bigOne = big.NewInt(1)

// parseBigInt treats the given bytes as a big-endian, signed integer and returns
// the result.
func parseBigInt(bytes []byte) (*big.Int, error) {
	if err := checkInteger(bytes); err != nil {
		return nil, err
	}
	ret := new(big.Int)
	if len(bytes) > 0 && bytes[0]&0x80 == 0x80 {
		// This is a negative number.

		denom := r.bigInt()
		return constant.Make(new(big.Rat).SetFrac(num, denom))
	case ValBigFloat:
		return constant.Make(r.bigFloat())
	}
}

func (r *Decoder) bigInt() *big.Int {
	v := new(big.Int).SetBytes([]byte(r.String()))
	if r.Bool() {
		v.Neg(v)
	}
	return v
}

func (r *Decoder) bigFloat() *big.Float {
	v := new(big.Float).SetPrec(512)

	// Convert from ConstX auxint values to the real uint64 constant they represent.
	d := uint64(c) << (64 - n) >> (64 - n)

	C := new(big.Int).SetUint64(d)
	s := C.BitLen()
	M := big.NewInt(1)
	M.Lsh(M, n+uint(s))     // 2^(n+s)
	M.Add(M, C)             // 2^(n+s)+c
	M.Sub(M, big.NewInt(1)) // 2^(n+s)+c-1
	M.Div(M, C)             // ⎡2^(n+s)/c⎤
	if M.Bit(int(n)) != 1 {
		panic("n+1st bit isn't set")
	}

// license that can be found in the LICENSE file.

// Test to make sure that we don't try using larger loads for
// generated equality functions on architectures that can't do
// unaligned loads.

package main

// T has a big field that wants to be compared with larger loads/stores.
// T is "special" because of the unnamed field, so it needs a generated equality function.
// T is an odd number of bytes in size and has alignment 1.
type T struct {

# Sourcing this enables local disk cache
if [[ $(uname -s) == "Darwin" ]]; then
  echo "Please note that using disk cache on macOS is not recommended because the"
  echo "cache can end up being pretty big and make the build process inefficient."
fi

				t.Errorf("#%d,%d bad result: %x (want %x)", i, j, out, message.out)
			}
		}
	}
}

func TestDecryptOAEP(t *testing.T) {
	random := rand.Reader

	sha1 := sha1.New()
	n := new(big.Int)
	d := new(big.Int)
	for i, test := range testEncryptOAEPData {
		n.SetString(test.modulus, 16)
		d.SetString(test.d, 16)
		private := new(PrivateKey)
		private.PublicKey = PublicKey{N: n, E: test.e}
		private.D = d

// Test passing C struct to exported Go function.

/*
#include <stdint.h>
#include <stdlib.h>

// T is a C struct with alignment padding after b.
// The padding bytes are not considered initialized by MSAN.
// It is big enough to be passed on stack in C ABI (and least
// on AMD64).
typedef struct { char b; uintptr_t x, y; } T;

extern void F(T);

// Use weak as a hack to permit defining a function even though we use export.