Source reorganization. In short:

  * Added directories and moved related files into them:
      - src for the MPFR source files (to build the library).
      - doc for documentation files (except INSTALL, README...).
      - tools for various tools (scripts) and mbench.
      - tune for tuneup-related source files.
      - other for other source files (not distributed in tarballs).
    Existing directories:
      - tests for the source files of the test suite (make check).
      - examples for examples.
      - m4 for m4 files.
  * Renamed configure.in to configure.ac.
  * Added/updated Makefile.am files where needed.
  * Updated acinclude.m4 and configure.ac (AC_CONFIG_FILES line).
  * Updated the documentation (INSTALL, README, doc/README.dev and
    doc/mpfr.texi).
  * Updated NEWS and TODO.
  * Updated the scripts now in tools.

The following script was used:

#!/usr/bin/env zsh
svn mkdir doc other src tools tune
svn mv ${${(M)$(sed -n '/libmpfr_la_SOURCES/,/[^\]$/p' \
         Makefile.am):#*.[ch]}:#get_patches.c} mparam_h.in \
       round_raw_generic.c jyn_asympt.c src
svn mv mbench check_inits_clears coverage get_patches.sh mpfrlint \
  nightly-test update-patchv update-version tools
svn mv bidimensional_sample.c speed.c tuneup.c tune
svn mv *.{c,h} other
svn mv FAQ.html README.dev algorithm* faq.xsl fdl.texi mpfr.texi \
  update-faq doc
svn mv configure.in configure.ac
svn cp Makefile.am src/Makefile.am
svn rm replace_all
[Modifying some files, see above]
svn add doc/Makefile.am
svn add tune/Makefile.am

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@7087 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 182 insertions, 0 deletions

diff --git a/src/sinh.c b/src/sinh.c
new file mode 100644
index 000000000..d3d30ac66
--- /dev/null
+++ b/src/sinh.c
@@ -0,0 +1,182 @@
+/* mpfr_sinh -- hyperbolic sine
+
+Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+Contributed by the Arenaire and Caramel 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 3 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.LESSER.  If not, see
+http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#define MPFR_NEED_LONGLONG_H
+#include "mpfr-impl.h"
+
+ /* The computation of sinh is done by
+    sinh(x) = 1/2 [e^(x)-e^(-x)]          */
+
+int
+mpfr_sinh (mpfr_ptr y, mpfr_srcptr xt, mpfr_rnd_t rnd_mode)
+{
+  mpfr_t x;
+  int inexact;
+
+  MPFR_LOG_FUNC (("x[%#R]=%R rnd=%d", xt, xt, rnd_mode),
+                 ("y[%#R]=%R inexact=%d", y, y, inexact));
+
+  if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (xt)))
+    {
+      if (MPFR_IS_NAN (xt))
+        {
+          MPFR_SET_NAN (y);
+          MPFR_RET_NAN;
+        }
+      else if (MPFR_IS_INF (xt))
+        {
+          MPFR_SET_INF (y);
+          MPFR_SET_SAME_SIGN (y, xt);
+          MPFR_RET (0);
+        }
+      else /* xt is zero */
+        {
+          MPFR_ASSERTD (MPFR_IS_ZERO (xt));
+          MPFR_SET_ZERO (y);   /* sinh(0) = 0 */
+          MPFR_SET_SAME_SIGN (y, xt);
+          MPFR_RET (0);
+        }
+    }
+
+  /* sinh(x) = x + x^3/6 + ... so the error is < 2^(3*EXP(x)-2) */
+  MPFR_FAST_COMPUTE_IF_SMALL_INPUT (y, xt, -2 * MPFR_GET_EXP(xt), 2, 1,
+                                    rnd_mode, {});
+
+  MPFR_TMP_INIT_ABS (x, xt);
+
+  {
+    mpfr_t t, ti;
+    mpfr_exp_t d;
+    mpfr_prec_t Nt;    /* Precision of the intermediary variable */
+    long int err;    /* Precision of error */
+    MPFR_ZIV_DECL (loop);
+    MPFR_SAVE_EXPO_DECL (expo);
+    MPFR_GROUP_DECL (group);
+
+    MPFR_SAVE_EXPO_MARK (expo);
+
+    /* compute the precision of intermediary variable */
+    Nt = MAX (MPFR_PREC (x), MPFR_PREC (y));
+    /* the optimal number of bits : see algorithms.ps */
+    Nt = Nt + MPFR_INT_CEIL_LOG2 (Nt) + 4;
+    /* If x is near 0, exp(x) - 1/exp(x) = 2*x+x^3/3+O(x^5) */
+    if (MPFR_GET_EXP (x) < 0)
+      Nt -= 2*MPFR_GET_EXP (x);
+
+    /* initialise of intermediary variables */
+    MPFR_GROUP_INIT_2 (group, Nt, t, ti);
+
+    /* First computation of sinh */
+    MPFR_ZIV_INIT (loop, Nt);
+    for (;;)
+      {
+        MPFR_BLOCK_DECL (flags);
+
+        /* compute sinh */
+        MPFR_BLOCK (flags, mpfr_exp (t, x, MPFR_RNDD));
+        if (MPFR_OVERFLOW (flags))
+          /* exp(x) does overflow */
+          {
+            /* sinh(x) = 2 * sinh(x/2) * cosh(x/2) */
+            mpfr_div_2ui (ti, x, 1, MPFR_RNDD); /* exact */
+
+            /* t <- cosh(x/2): error(t) <= 1 ulp(t) */
+            MPFR_BLOCK (flags, mpfr_cosh (t, ti, MPFR_RNDD));
+            if (MPFR_OVERFLOW (flags))
+              /* when x>1 we have |sinh(x)| >= cosh(x/2), so sinh(x)
+                 overflows too */
+              {
+                inexact = mpfr_overflow (y, rnd_mode, MPFR_SIGN (xt));
+                MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, MPFR_FLAGS_OVERFLOW);
+                break;
+              }
+
+            /* ti <- sinh(x/2): , error(ti) <= 1 ulp(ti)
+               cannot overflow because 0 < sinh(x) < cosh(x) when x > 0 */
+            mpfr_sinh (ti, ti, MPFR_RNDD);
+
+            /* multiplication below, error(t) <= 5 ulp(t) */
+            MPFR_BLOCK (flags, mpfr_mul (t, t, ti, MPFR_RNDD));
+            if (MPFR_OVERFLOW (flags))
+              {
+                inexact = mpfr_overflow (y, rnd_mode, MPFR_SIGN (xt));
+                MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, MPFR_FLAGS_OVERFLOW);
+                break;
+              }
+
+            /* doubling below, exact */
+            MPFR_BLOCK (flags, mpfr_mul_2ui (t, t, 1, MPFR_RNDN));
+            if (MPFR_OVERFLOW (flags))
+              {
+                inexact = mpfr_overflow (y, rnd_mode, MPFR_SIGN (xt));
+                MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, MPFR_FLAGS_OVERFLOW);
+                break;
+              }
+
+            /* we have lost at most 3 bits of precision */
+            err = Nt - 3;
+            if (MPFR_LIKELY (MPFR_CAN_ROUND (t, err, MPFR_PREC (y),
+                                             rnd_mode)))
+              {
+                inexact = mpfr_set4 (y, t, rnd_mode, MPFR_SIGN (xt));
+                break;
+              }
+            err = Nt; /* double the precision */
+          }
+        else
+          {
+            d = MPFR_GET_EXP (t);
+            mpfr_ui_div (ti, 1, t, MPFR_RNDU); /* 1/exp(x) */
+            mpfr_sub (t, t, ti, MPFR_RNDN);    /* exp(x) - 1/exp(x) */
+            mpfr_div_2ui (t, t, 1, MPFR_RNDN);  /* 1/2(exp(x) - 1/exp(x)) */
+
+            /* it may be that t is zero (in fact, it can only occur when te=1,
+               and thus ti=1 too) */
+            if (MPFR_IS_ZERO (t))
+              err = Nt; /* double the precision */
+            else
+              {
+                /* calculation of the error */
+                d = d - MPFR_GET_EXP (t) + 2;
+                /* error estimate: err = Nt-(__gmpfr_ceil_log2(1+pow(2,d)));*/
+                err = Nt - (MAX (d, 0) + 1);
+                if (MPFR_LIKELY (MPFR_CAN_ROUND (t, err, MPFR_PREC (y),
+                                                 rnd_mode)))
+                  {
+                    inexact = mpfr_set4 (y, t, rnd_mode, MPFR_SIGN (xt));
+                    break;
+                  }
+              }
+          }
+
+        /* actualisation of the precision */
+        Nt += err;
+        MPFR_ZIV_NEXT (loop, Nt);
+        MPFR_GROUP_REPREC_2 (group, Nt, t, ti);
+      }
+    MPFR_ZIV_FREE (loop);
+    MPFR_GROUP_CLEAR (group);
+    MPFR_SAVE_EXPO_FREE (expo);
+  }
+
+  return mpfr_check_range (y, inexact, rnd_mode);
+}