1 files changed, 4 insertions, 0 deletions
diff --git a/sprintf.c b/sprintf.c
index e5ac2a4408..36d06c48fd 100644
--- a/sprintf.c
+++ b/sprintf.c
@@ -17,6 +17,10 @@
 #include <math.h>
 #include <stdarg.h>
 
+#ifdef HAVE_IEEEFP_H
+#include <ieeefp.h>
+#endif
+
 #define BIT_DIGITS(N)   (((N)*146)/485 + 1)  /* log2(10) =~ 146/485 */
 #define BITSPERDIG (SIZEOF_BDIGITS*CHAR_BIT)
 #define EXTENDSIGN(n, l) (((~0 << (n)) >> (((n)*(l)) % BITSPERDIG)) & ~(~0 << (n)))