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