add FORCE_EVAL macro to evaluate float expr for their side effect

[musl] / src / math / nexttowardf.c

diff --git a/src/math/nexttowardf.c b/src/math/nexttowardf.c
index e8e6f67..8648be6 100644 (file)
--- a/src/math/nexttowardf.c
+++ b/src/math/nexttowardf.c
@@ -30,9 +30,7 @@ float nexttowardf(float x, long double y)
        if (e == 0x7f800000)
                return x + x;
        /* raise underflow if ux.value is subnormal or zero */
-       if (e == 0) {
-               volatile float z;
-               z = x*x + ux.value*ux.value;
-       }
+       if (e == 0)
+               FORCE_EVAL(x*x + ux.value*ux.value);
        return ux.value;
 }