gcc/testsuite/gcc.misc-tests/gcov-8.c

   1 /* Check that gcov correctly rounds nearly zero to nonzero and nearly
   2    100 to not-100.
   3
   4    Copyright (C) 2002 Free Software Foundation, Inc.
   5    Contributed by Nathan Sidwell <nathan@codesourcery.com>
   6 */
   7
   8 /* { dg-options "-fprofile-arcs -ftest-coverage" } */
   9 /* { dg-do run { target native } } */
  10
  11 int proxy (int i)
  12 {
  13   return i;
  14 }
  15
  16 int foo (int i)
  17 {
  18   if (i > 0) /* branch(1) */
  19     return proxy (1);
  20   else if (i < 0) /* branch(100) */
  21     return proxy (-1);
  22   else
  23     return proxy (0);
  24 }
  25
  26 int baz (int i)
  27 {
  28   if (i == 0) /* branch(99) */
  29     return proxy (0);
  30   else if (i > 0) /* branch(0)*/
  31     return proxy (1);
  32   else
  33     return proxy (-1);
  34 }
  35
  36 int main ()
  37 {
  38   int t = 0;
  39   int ix;
  40
  41   for (ix = 0; ix != 1000; ix++)
  42     t += foo (ix) + baz (ix);
  43
  44   return t == 0;
  45 }
  46
  47 /* { dg-final { run-gcov branches {-b gcov-8.c } } } */