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/* Auxiliary function to control FP rounding mode. Assumes ISO C99. */
#include <fenv.h>
#include <caml/mlvalues.h>
#ifndef FE_DOWNWARD
#define FE_DOWNWARD (-1)
#endif
#ifndef FE_TONEAREST
#define FE_TONEAREST (-1)
#endif
#ifndef FE_TOWARDZERO
#define FE_TOWARDZERO (-1)
#endif
#ifndef FE_UPWARD
#define FE_UPWARD (-1)
#endif
static int modes[4] = {
FE_DOWNWARD, FE_TONEAREST, FE_TOWARDZERO, FE_UPWARD
};
CAMLprim value caml_ztest_setround(value vmode)
{
int rc = fesetround(modes[Int_val(vmode)]);
return Val_bool(rc == 0);
}
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