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-rw-r--r--libc-top-half/musl/src/math/fmax.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/math/fmax.c b/libc-top-half/musl/src/math/fmax.c
new file mode 100644
index 0000000..94f0caa
--- /dev/null
+++ b/libc-top-half/musl/src/math/fmax.c
@@ -0,0 +1,13 @@
+#include <math.h>
+
+double fmax(double x, double y)
+{
+ if (isnan(x))
+ return y;
+ if (isnan(y))
+ return x;
+ /* handle signed zeros, see C99 Annex F.9.9.2 */
+ if (signbit(x) != signbit(y))
+ return signbit(x) ? y : x;
+ return x < y ? y : x;
+}