view tests/mini/ptrarith.d @ 341:1bb99290e03a trunk

[svn r362] Started merging the old 'test' dir as well as the newer 'tangotests' dir into 'tests/mini' and 'tests/minicomplex'.
author lindquist
date Sun, 13 Jul 2008 02:51:19 +0200
parents test/ptrarith.d@d9d5d59873d8
children
line wrap: on
line source
extern(C) int printf(char*, ...);

void main()
{
    printf("Pointer arithmetic test\n");
    int* p;
    printf("0x%x\n", p);
    assert(p++ is null);
    assert(cast(size_t)p == 4);
    printf("0x%x\n", p);
    p--;
    assert(p is null);
    printf("0x%x\n", p);
    int d = 4;
    p+=d;
    printf("0x%x\n", p);
    assert(cast(size_t)p == 16);
    d = 2;
    p+=d;
    printf("0x%x\n", p);
    assert(cast(size_t)p == 0x18);
    d = 6;
    p-=d;
    printf("0x%x\n", p);
    assert(p is null);
    printf("  SUCCESS\n");
}

void fill_byte_array(ubyte* a, size_t n, ubyte v)
{
    auto p = a;
    auto end = a+n;
    while (p !is end)
        *p++ = v;
}