new functions (compatibility with mpf)

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@532 280ebfd0-de03-0410-8827-d642c229c3f4

5 files changed, 282 insertions, 0 deletions

diff --git a/add_ui.c b/add_ui.c
new file mode 100644
index 000000000..dbd0e5b82
--- /dev/null
+++ b/add_ui.c
@@ -0,0 +1,56 @@
+/* mpfr_add_ui -- add a floating-point number with a machine integer
+
+Copyright (C) 2000 PolKA project, Inria Lorraine and Loria
+
+This file is part of the MPFR Library.
+
+The MPFR 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 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 Library General Public
+License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with the MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include <stdio.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "longlong.h"
+#include "mpfr.h"
+
+#define MON_INIT(xp, x, p, s) xp = (mp_ptr) TMP_ALLOC(s*BYTES_PER_MP_LIMB);    x -> _mp_prec = p; x -> _mp_d = xp; x -> _mp_size = s;
+
+void
+#if __STDC__
+mpfr_add_ui(mpfr_ptr y, mpfr_srcptr x, unsigned long int u, mp_rnd_t rnd_mode)
+#else
+mpfr_add_ui(y, x, u, rnd_mode)
+     mpfr_ptr y;
+     mpfr_srcptr x;
+     unsigned long int u;
+     mp_rnd_t rnd_mode;
+#endif
+{
+  mpfr_t uu;
+  mp_limb_t *up;
+  unsigned long cnt;
+  TMP_DECL(marker);
+
+  if (u) { /* if u=0, do nothing */
+    MON_INIT(up, uu, BITS_PER_MP_LIMB, 1);
+    count_leading_zeros(cnt, (mp_limb_t) u);
+    *up = (mp_limb_t) u << cnt;
+    EXP(uu) = BITS_PER_MP_LIMB-cnt;
+  
+    mpfr_add(y, x, uu, rnd_mode);
+
+    TMP_FREE(marker);
+  }
+}
diff --git a/reldiff.c b/reldiff.c
new file mode 100644
index 000000000..2091f33b8
--- /dev/null
+++ b/reldiff.c
@@ -0,0 +1,52 @@
+/* mpfr_reldiff -- compute relative difference of two floating-point numbers.
+
+Copyright (C) 2000 PolKA project, Inria Lorraine and Loria
+
+This file is part of the MPFR Library.
+
+The MPFR 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 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 Library General Public
+License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with the MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include <stdio.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "mpfr.h"
+
+/* reldiff(b, c) = abs(b-c)/b */
+void 
+#if __STDC__
+mpfr_reldiff(mpfr_ptr a, mpfr_srcptr b, mpfr_srcptr c, mp_rnd_t rnd_mode)
+#else
+mpfr_reldiff(a, b, c, rnd_mode) 
+     mpfr_ptr a;
+     mpfr_srcptr b;
+     mpfr_srcptr c;
+     mp_rnd_t rnd_mode;
+#endif
+{
+  if (FLAG_NAN(b) || FLAG_NAN(c)) { SET_NAN(a); return; }
+
+  if (!NOTZERO(b)) /* reldiff = abs(c)/c = sign(c) */
+    mpfr_set_ui(a, MPFR_SIGN(c), rnd_mode);
+
+  else {
+    mp_rnd_t rnd1;
+
+    mpfr_sub(a, b, c, rnd_mode);
+    mpfr_abs(a, a, rnd_mode); /* for compatibility with MPF */
+    mpfr_div(a, a, b, rnd_mode);
+  }
+}
+
diff --git a/sqrt_ui.c b/sqrt_ui.c
new file mode 100644
index 000000000..dbeb070ef
--- /dev/null
+++ b/sqrt_ui.c
@@ -0,0 +1,60 @@
+/* mpfr_sqrt_ui -- square root of a machine integer
+
+Copyright (C) 2000 PolKA project, Inria Lorraine and Loria
+
+This file is part of the MPFR Library.
+
+The MPFR 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 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 Library General Public
+License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with the MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#define MON_INIT(xp, x, p, s) xp = (mp_ptr) TMP_ALLOC(s*BYTES_PER_MP_LIMB);    x -> _mp_prec = p; x -> _mp_d = xp; x -> _mp_size = s;
+
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "mpfr.h"
+#include "longlong.h"
+
+int
+#if __STDC__
+mpfr_sqrt_ui (mpfr_ptr r, unsigned long u, mp_rnd_t rnd_mode)
+#else
+mpfr_sqrt_ui (r, u, rnd_mode)
+     mpfr_ptr r;
+     unsigned long u;
+     mp_rnd_t rnd_mode;
+#endif
+{
+  int exact=1;
+  mpfr_t uu;
+  mp_limb_t *up;
+  unsigned long cnt;
+  TMP_DECL(marker);
+
+  if (u) { /* if u=0, do nothing */
+    MON_INIT(up, uu, BITS_PER_MP_LIMB, 1);
+    count_leading_zeros(cnt, (mp_limb_t) u);
+    *up = (mp_limb_t) u << cnt;
+    EXP(uu) = BITS_PER_MP_LIMB-cnt;
+
+    exact = mpfr_sqrt(r, uu, rnd_mode);
+
+    TMP_FREE(marker);
+  }
+  else SET_ZERO(r);
+  return exact;
+}
diff --git a/ui_div.c b/ui_div.c
new file mode 100644
index 000000000..11c8e0ce1
--- /dev/null
+++ b/ui_div.c
@@ -0,0 +1,57 @@
+/* mpfr_ui_div -- divide a machine integer by a floating-point number
+
+Copyright (C) 2000 PolKA project, Inria Lorraine and Loria
+
+This file is part of the MPFR Library.
+
+The MPFR 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 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 Library General Public
+License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with the MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include <stdio.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "longlong.h"
+#include "mpfr.h"
+
+#define MON_INIT(xp, x, p, s) xp = (mp_ptr) TMP_ALLOC(s*BYTES_PER_MP_LIMB);    x -> _mp_prec = p; x -> _mp_d = xp; x -> _mp_size = s;
+
+void
+#if __STDC__
+mpfr_ui_div(mpfr_ptr y, unsigned long int u, mpfr_srcptr x, mp_rnd_t rnd_mode)
+#else
+mpfr_ui_div(y, u, x, rnd_mode)
+     mpfr_ptr y;
+     unsigned long int u;
+     mpfr_srcptr x;
+     mp_rnd_t rnd_mode;
+#endif
+{
+  mpfr_t uu;
+  mp_limb_t *up;
+  unsigned long cnt;
+  TMP_DECL(marker);
+
+  if (u) {
+    MON_INIT(up, uu, BITS_PER_MP_LIMB, 1);
+    count_leading_zeros(cnt, (mp_limb_t) u);
+    *up = (mp_limb_t) u << cnt;
+    EXP(uu) = BITS_PER_MP_LIMB-cnt;
+  
+    mpfr_div(y, uu, x, rnd_mode);
+
+    TMP_FREE(marker);
+  }
+  else SET_ZERO(y); /* if u=0, then set y to 0 */
+}
diff --git a/ui_sub.c b/ui_sub.c
new file mode 100644
index 000000000..7fa3041ba
--- /dev/null
+++ b/ui_sub.c
@@ -0,0 +1,57 @@
+/* mpfr_ui_sub -- divide a machine integer by a floating-point number
+
+Copyright (C) 2000 PolKA project, Inria Lorraine and Loria
+
+This file is part of the MPFR Library.
+
+The MPFR 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 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 Library General Public
+License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with the MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include <stdio.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "longlong.h"
+#include "mpfr.h"
+
+#define MON_INIT(xp, x, p, s) xp = (mp_ptr) TMP_ALLOC(s*BYTES_PER_MP_LIMB);    x -> _mp_prec = p; x -> _mp_d = xp; x -> _mp_size = s;
+
+void
+#if __STDC__
+mpfr_ui_sub(mpfr_ptr y, unsigned long int u, mpfr_srcptr x, mp_rnd_t rnd_mode)
+#else
+mpfr_ui_sub(y, u, x, rnd_mode)
+     mpfr_ptr y;
+     unsigned long int u;
+     mpfr_srcptr x;
+     mp_rnd_t rnd_mode;
+#endif
+{
+  mpfr_t uu;
+  mp_limb_t *up;
+  unsigned long cnt;
+  TMP_DECL(marker);
+
+  if (u) {
+    MON_INIT(up, uu, BITS_PER_MP_LIMB, 1);
+    count_leading_zeros(cnt, (mp_limb_t) u);
+    *up = (mp_limb_t) u << cnt;
+    EXP(uu) = BITS_PER_MP_LIMB-cnt;
+  
+    mpfr_sub(y, uu, x, rnd_mode);
+
+    TMP_FREE(marker);
+  }
+  else mpfr_neg(y, x, rnd_mode); /* if u=0, then set y to -x */
+}