gcc/testsuite/gcc.target/arm/fp16-variadic-1.c

   1 /* Test promotion of __fp16 to double as arguments to variadic function.  */
   2
   3 /* { dg-do run } */
   4 /* { dg-options "-mfp16-format=ieee" } */
   5
   6 #include <stdlib.h>
   7 #include <stdarg.h>
   8
   9 extern int f (int n, ...);
  10
  11 int
  12 f (int n, ...)
  13 {
  14   if (n == 2)
  15     {
  16       double xx, yy;
  17       va_list ap;
  18       va_start (ap, n);
  19       xx = va_arg (ap, double);
  20       yy = va_arg (ap, double);
  21       va_end (ap);
  22       if (xx == 42.0 && yy == -42.0)
  23         return 1;
  24     }
  25   return 0;
  26 }
  27
  28 static __fp16 x = 42.0;
  29 static __fp16 y = -42.0;
  30
  31 int
  32 main (void)
  33 {
  34   if (!f (2, x, y))
  35     abort ();
  36   return 0;
  37 }