one more fenv availability issue: lround

[musl] / src / math / fmal.c

diff --git a/src/math/fmal.c b/src/math/fmal.c
index 200bd5a..3944c29 100644 (file)
--- a/src/math/fmal.c
+++ b/src/math/fmal.c
@@ -194,27 +194,37 @@ long double fmal(long double x, long double y, long double z)
         * modes other than FE_TONEAREST are painful.
         */
        if (spread < -LDBL_MANT_DIG) {
+#ifdef FE_INEXACT
                feraiseexcept(FE_INEXACT);
+#endif
+#ifdef FE_UNDERFLOW
                if (!isnormal(z))
                        feraiseexcept(FE_UNDERFLOW);
+#endif
                switch (oround) {
-               case FE_TONEAREST:
+               default: /* FE_TONEAREST */
                        return (z);
+#ifdef FE_TOWARDZERO
                case FE_TOWARDZERO:
                        if (x > 0.0 ^ y < 0.0 ^ z < 0.0)
                                return (z);
                        else
                                return (nextafterl(z, 0));
+#endif
+#ifdef FE_DOWNWARD
                case FE_DOWNWARD:
                        if (x > 0.0 ^ y < 0.0)
                                return (z);
                        else
                                return (nextafterl(z, -INFINITY));
-               default:        /* FE_UPWARD */
+#endif
+#ifdef FE_UPWARD
+               case FE_UPWARD:
                        if (x > 0.0 ^ y < 0.0)
                                return (nextafterl(z, INFINITY));
                        else
                                return (z);
+#endif
                }
        }
        if (spread <= LDBL_MANT_DIG * 2)