math: use '#pragma STDC FENV_ACCESS ON' when fenv is accessed

[musl] / src / math / nearbyintf.c

diff --git a/src/math/nearbyintf.c b/src/math/nearbyintf.c
index 07df8f5..092e9ff 100644 (file)
--- a/src/math/nearbyintf.c
+++ b/src/math/nearbyintf.c
@@ -1,11 +1,18 @@
 #include <fenv.h>
 #include <math.h>
 
-float nearbyintf(float x) {
-       fenv_t e;
+float nearbyintf(float x)
+{
+#ifdef FE_INEXACT
+       #pragma STDC FENV_ACCESS ON
+       int e;
 
-       fegetenv(&e);
+       e = fetestexcept(FE_INEXACT);
+#endif
        x = rintf(x);
-       fesetenv(&e);
+#ifdef FE_INEXACT
+       if (!e)
+               feclearexcept(FE_INEXACT);
+#endif
        return x;
 }