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Diffstat (limited to 'lib/mlibc/options/ansi/musl-generic-math/nearbyint.c')
-rw-r--r--lib/mlibc/options/ansi/musl-generic-math/nearbyint.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/lib/mlibc/options/ansi/musl-generic-math/nearbyint.c b/lib/mlibc/options/ansi/musl-generic-math/nearbyint.c
new file mode 100644
index 0000000..f4e8aac
--- /dev/null
+++ b/lib/mlibc/options/ansi/musl-generic-math/nearbyint.c
@@ -0,0 +1,20 @@
+#include <fenv.h>
+#include <math.h>
+
+/* nearbyint is the same as rint, but it must not raise the inexact exception */
+
+double nearbyint(double x)
+{
+#ifdef FE_INEXACT
+ #pragma STDC FENV_ACCESS ON
+ int e;
+
+ e = fetestexcept(FE_INEXACT);
+#endif
+ x = rint(x);
+#ifdef FE_INEXACT
+ if (!e)
+ feclearexcept(FE_INEXACT);
+#endif
+ return x;
+}