-# roundf.m4 serial 11
+# roundf.m4 serial 13
dnl Copyright (C) 2007-2011 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_FLOAT_MINUS_ZERO_CODE[
]gl_FLOAT_SIGNBIT_CODE[
-int main()
+static float dummy (float f) { return 0; }
+int main (int argc, char *argv[])
{
+ float (*my_roundf) (float) = argc ? roundf : dummy;
+ int result = 0;
/* Test whether roundf (-0.0f) is -0.0f. */
- if (signbitf (minus_zerof) && !signbitf (roundf (minus_zerof)))
- return 1;
- return 0;
+ if (signbitf (minus_zerof) && !signbitf (my_roundf (minus_zerof)))
+ result |= 1;
+ /* Test whether roundf (-0.3f) is -0.0f. */
+ if (signbitf (-0.3f) && !signbitf (my_roundf (-0.3f)))
+ result |= 2;
+ return result;
}
]])],
[gl_cv_func_roundf_ieee=yes],