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diff --git a/mpfr/printf.c b/mpfr/printf.c
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--- /dev/null
+++ b/mpfr/printf.c
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+/* mpfr_printf -- printf function and friends.
+
+Copyright 2007, 2008, 2009 Free Software Foundation, Inc.
+Contributed by the Arenaire and Cacao projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MPFR 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 Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* The mpfr_printf-like functions are defined only if stdarg.h exist */
+#ifdef HAVE_STDARG
+
+#include <stdarg.h>
+#include <errno.h>
+#include "mpfr-impl.h"
+
+#ifdef _MPFR_H_HAVE_FILE
+
+/* Each printf-like function calls mpfr_vasprintf which
+   - returns the number of characters in the returned string excluding the
+   terminating null
+   - returns -1 and sets the erange flag if the number of produced characters
+   exceeds INT_MAX (in that case, also sets errno to EOVERFLOW in POSIX
+   systems) */
+
+#define GET_STR_VA(sz, str, fmt, ap)            \
+  do                                            \
+    {                                           \
+      sz = mpfr_vasprintf (&(str), fmt, ap);    \
+      if (sz < 0)                               \
+        {                                       \
+          if (str)                              \
+            mpfr_free_str (str);                \
+          return -1;                            \
+        }                                       \
+    } while (0)
+
+#define GET_STR(sz, str, fmt)                   \
+  do                                            \
+    {                                           \
+      va_list ap;                               \
+      va_start(ap, fmt);                        \
+      sz = mpfr_vasprintf (&(str), fmt, ap);    \
+      va_end (ap);                              \
+      if (sz < 0)                               \
+        {                                       \
+          if (str)                              \
+            mpfr_free_str (str);                \
+          return -1;                            \
+        }                                       \
+    } while (0)
+
+int
+mpfr_printf (const char *fmt, ...)
+{
+  char *str;
+  int ret;
+
+  GET_STR (ret, str, fmt);
+  ret = printf ("%s", str);
+
+  mpfr_free_str (str);
+  return ret;
+}
+
+int
+mpfr_vprintf (const char *fmt, va_list ap)
+{
+  char *str;
+  int ret;
+
+  GET_STR_VA (ret, str, fmt, ap);
+  ret = printf ("%s", str);
+
+  mpfr_free_str (str);
+  return ret;
+}
+
+
+int
+mpfr_fprintf (FILE *fp, const char *fmt, ...)
+{
+  char *str;
+  int ret;
+
+  GET_STR (ret, str, fmt);
+  ret = fprintf (fp, "%s", str);
+
+  mpfr_free_str (str);
+  return ret;
+}
+
+int
+mpfr_vfprintf (FILE *fp, const char *fmt, va_list ap)
+{
+  char *str;
+  int ret;
+
+  GET_STR_VA (ret, str, fmt, ap);
+  ret = fprintf (fp, "%s", str);
+
+  mpfr_free_str (str);
+  return ret;
+}
+#endif /* _MPFR_H_HAVE_FILE */
+
+int
+mpfr_sprintf (char *buf, const char *fmt, ...)
+{
+  char *str;
+  int ret;
+
+  GET_STR (ret, str, fmt);
+  ret = sprintf (buf, "%s", str);
+
+  mpfr_free_str (str);
+  return ret;
+}
+
+int
+mpfr_vsprintf (char *buf, const char *fmt, va_list ap)
+{
+  char *str;
+  int ret;
+
+  GET_STR_VA (ret, str, fmt, ap);
+  ret = sprintf (buf, "%s", str);
+
+  mpfr_free_str (str);
+  return ret;
+}
+
+int
+mpfr_snprintf (char *buf, size_t size, const char *fmt, ...)
+{
+  char *str;
+  int ret;
+  size_t min_size;
+
+  GET_STR (ret, str, fmt);
+
+  /* C99 allows SIZE to be zero */
+  if (size != 0)
+    {
+      MPFR_ASSERTN (buf != NULL);
+      min_size = (size_t)ret < size ? (size_t)ret : size - 1;
+      strncpy (buf, str, min_size);
+      buf[min_size] = '\0';
+    }
+
+  mpfr_free_str (str);
+  return ret;
+}
+
+int
+mpfr_vsnprintf (char *buf, size_t size, const char *fmt, va_list ap)
+{
+  char *str;
+  int ret;
+  int min_size;
+
+  GET_STR_VA (ret, str, fmt, ap);
+
+  /* C99 allows SIZE to be zero */
+  if (size != 0)
+    {
+      MPFR_ASSERTN (buf != NULL);
+      min_size = (size_t)ret < size ? (size_t)ret : size - 1;
+      strncpy (buf, str, min_size);
+      buf[min_size] = '\0';
+    }
+
+  mpfr_free_str (str);
+  return ret;
+}
+
+int
+mpfr_asprintf (char **pp, const char *fmt, ...)
+{
+  int ret;
+
+  GET_STR (ret, *pp, fmt);
+
+  return ret;
+}
+#endif /* HAVE_STDARG */