1 files changed, 52 insertions, 0 deletions
diff --git a/stdio/fpioconst.h b/stdio/fpioconst.h
new file mode 100644
index 0000000000..8edbdccb17
--- /dev/null
+++ b/stdio/fpioconst.h
@@ -0,0 +1,52 @@
+/* Header file for constants used in floating point <-> decimal conversions.
+Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#ifndef _FPIOCONST_H
+#define	_FPIOCONST_H
+
+#include <float.h>
+#include "gmp.h"
+
+
+/* These values are used by __printf_fp, where they are noncritical (if the
+   value is not large enough, it will just be slower); and by
+   strtof/strtod/strtold, where it is critical (it's used for overflow
+   detection).
+
+   XXX These should be defined in <float.h>.  For the time being, we have the
+   IEEE754 values here.  */
+
+#define LDBL_MAX_10_EXP_LOG	12 /* = floor(log_2(LDBL_MAX_10_EXP)) */
+#define DBL_MAX_10_EXP_LOG	8 /* = floor(log_2(DBL_MAX_10_EXP)) */
+#define FLT_MAX_10_EXP_LOG	5 /* = floor(log_2(FLT_MAX_10_EXP)) */
+
+
+/* Table of powers of ten.  This is used by __printf_fp and by
+   strtof/strtod/strtold.  */
+struct mp_power
+  {
+    const mp_limb *array;	/* The array with the number representation. */
+    mp_size_t arraysize;	/* Size of the array.  */
+    int p_expo;			/* Exponent of the number 10^(2^i).  */
+    int m_expo;			/* Exponent of the number 10^-(2^i-1).  */
+  };
+extern const struct mp_power _fpioconst_pow10[LDBL_MAX_10_EXP_LOG + 1];
+
+
+#endif	/* fpioconst.h */