-# trunc.m4 serial 6
+# trunc.m4 serial 7
dnl Copyright (C) 2007, 2010-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
#include <math.h>
]gl_DOUBLE_MINUS_ZERO_CODE[
]gl_DOUBLE_SIGNBIT_CODE[
-int main()
+static double dummy (double f) { return 0; }
+int main (int argc, char *argv[])
{
+ double (*my_trunc) (double) = argc ? trunc : dummy;
/* Test whether trunc (-0.0) is -0.0. */
- if (signbitd (minus_zerod) && !signbitd (trunc (minus_zerod)))
+ if (signbitd (minus_zerod) && !signbitd (my_trunc (minus_zerod)))
return 1;
return 0;
}