Method: Fiddle::Pointer#-

Defined in:
pointer.c

#-(n) ⇒ Object

Returns a new pointer instance that has been moved back n bytes.



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# File 'pointer.c', line 644

static VALUE
rb_fiddle_ptr_minus(VALUE self, VALUE other)
{
    void *ptr;
    long num, size;

    ptr = rb_fiddle_ptr2cptr(self);
    size = RPTR_DATA(self)->size;
    num = NUM2LONG(other);
    return rb_fiddle_ptr_new((char *)ptr - num, size + num, 0);
}