1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/* Based on objc/execute/va_method.m, by Nicola Pero */
/* { dg-do run } */
#include <objc/Object.h>
#include <stdarg.h>
#include <stdlib.h>
/* Test methods with "C-style" trailing arguments, with or without ellipsis. */
@interface MathClass: Object
/* sum positive numbers; -1 ends the list */
+ (int) sum: (int) firstNumber, int secondNumber, ...;
+ (int) prod: (int) firstNumber, int secondNumber, int thirdNumber;
+ (int) minimum: (int) firstNumber, ...;
@end
extern "C" int some_func(id self, SEL _cmd, int firstN, int secondN, int thirdN, ...) {
return firstN + secondN + thirdN;
}
@implementation MathClass
+ (int) sum: (int) firstNumber, int secondNumber, ...
{
va_list ap;
int sum = 0, number = 0;
va_start (ap, secondNumber);
number = firstNumber + secondNumber;
while (number >= 0)
{
sum += number;
number = va_arg (ap, int);
}
va_end (ap);
return sum;
}
+ (int) prod: (int) firstNumber, int secondNumber, int thirdNumber {
return firstNumber * secondNumber * thirdNumber;
}
+ (int) minimum: (int) firstNumber, ...
{
va_list ap;
int minimum = 999, number = 0;
va_start (ap, firstNumber);
number = firstNumber;
while (number >= 0)
{
minimum = (minimum < number ? minimum: number);
number = va_arg (ap, int);
}
va_end (ap);
return minimum;
}
@end
int main (void)
{
if ([MathClass sum: 1, 2, 3, 4, 5, -1] != 15)
abort ();
if ([MathClass prod: 4, 5, 6] != 120)
abort ();
if ([MathClass minimum: 17, 9, 133, 84, 35, -1] != 9)
abort ();
return 0;
}
|