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-rw-r--r--lib/libm/__tandf.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/libm/__tandf.c b/lib/libm/__tandf.c
index 7219ed33..5bae8073 100644
--- a/lib/libm/__tandf.c
+++ b/lib/libm/__tandf.c
@@ -13,7 +13,9 @@
* ====================================================
*/
-#include "libm.h"
+#include "libm.h" // for __tandf
+
+#include <math.h> // for double_t
/* |tan(x)/x - t(x)| < 2**-25.5 (~[-2e-08, 2e-08]). */
static const double T[] = {