[gcc] GCC 4.5.0=>4.5.1

gcc/mpfr/csc.c

Index: gcc/mpfr/csc.c
diff --git a/gcc/mpfr/csc.c b/gcc/mpfr/csc.c
deleted file mode 100644
index 61050378c3807cbfc275d52b41b68c79866d8595..0000000000000000000000000000000000000000
--- a/gcc/mpfr/csc.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/* mpfr_csc - cosecant function.
-
-Copyright 2005, 2006, 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. */
-
-/* the cosecant is defined by csc(x) = 1/sin(x).
-   csc (NaN) = NaN.
-   csc (+Inf) = csc (-Inf) = NaN.
-   csc (+0) = +Inf.
-   csc (-0) = -Inf.
-*/
-
-#define FUNCTION mpfr_csc
-#define INVERSE  mpfr_sin
-#define ACTION_NAN(y) do { MPFR_SET_NAN(y); MPFR_RET_NAN; } while (1)
-#define ACTION_INF(y) do { MPFR_SET_NAN(y); MPFR_RET_NAN; } while (1)
-#define ACTION_ZERO(y,x) do { MPFR_SET_SAME_SIGN(y,x); MPFR_SET_INF(y); \
-                              MPFR_RET(0); } while (1)
-/* near x=0, we have csc(x) = 1/x + x/6 + ..., more precisely we have
-   |csc(x) - 1/x| <= 0.2 for |x| <= 1. The analysis is similar to that for
-   gamma(x) near x=0 (see gamma.c), except here the error term has the same
-   sign as 1/x, thus |csc(x)| >= |1/x|. Then:
-   (i) either x is a power of two, then 1/x is exactly representable, and
-       as long as 1/2*ulp(1/x) > 0.2, we can conclude;
-   (ii) otherwise assume x has <= n bits, and y has <= n+1 bits, then
-   |y - 1/x| >= 2^(-2n) ufp(y), where ufp means unit in first place.
-   Since |csc(x) - 1/x| <= 0.2, if 2^(-2n) ufp(y) >= 0.4, then
-   |y - csc(x)| >= 2^(-2n-1) ufp(y), and rounding 1/x gives the correct result.
-   If x < 2^E, then y > 2^(-E), thus ufp(y) > 2^(-E-1).
-   A sufficient condition is thus EXP(x) <= -2 MAX(PREC(x),PREC(Y)). */
-#define ACTION_TINY(y,x,r) \
-  if (MPFR_EXP(x) <= -2 * (mp_exp_t) MAX(MPFR_PREC(x), MPFR_PREC(y)))   \
-    {                                                                   \
-      int signx = MPFR_SIGN(x);                                         \
-      inexact = mpfr_ui_div (y, 1, x, r);                               \
-      if (inexact == 0) /* x is a power of two */                       \
-        { /* result always 1/x, except when rounding away from zero */  \
-          if (rnd_mode == GMP_RNDU)                                     \
-            {                                                           \
-              if (signx > 0)                                            \
-                mpfr_nextabove (y); /* 2^k + epsilon */                 \
-              inexact = 1;                                              \
-            }                                                           \
-          else if (rnd_mode == GMP_RNDD)                                \
-            {                                                           \
-              if (signx < 0)                                            \
-                mpfr_nextbelow (y); /* -2^k - epsilon */                \
-              inexact = -1;                                             \
-            }                                                           \
-          else /* round to zero, or nearest */                          \
-            inexact = -signx;                                           \
-        }                                                               \
-      MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, __gmpfr_flags);                \
-      goto end;                                                         \
-    }
-
-#include "gen_inverse.h"