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Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_rintl.c')
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/s_rintl.c119
1 files changed, 0 insertions, 119 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_rintl.c b/sysdeps/ieee754/ldbl-128ibm/s_rintl.c
deleted file mode 100644
index 1f4e33f..0000000
--- a/sysdeps/ieee754/ldbl-128ibm/s_rintl.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/* Round to int long double floating-point values.
- IBM extended format long double version.
- Copyright (C) 2006 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 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 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-/* This has been coded in assembler because GCC makes such a mess of it
- when it's coded in C. */
-
-#include <math.h>
-#include <fenv_libc.h>
-#include <math_ldbl_opt.h>
-#include <float.h>
-#include <ieee754.h>
-
-
-#ifdef __STDC__
-long double
-__rintl (long double x)
-#else
-long double
-__rintl (x)
- long double x;
-#endif
-{
- double xh, xl, hi, lo;
-
- ldbl_unpack (x, &xh, &xl);
-
- /* Return Inf, Nan, +/-0 unchanged. */
- if (__builtin_expect (xh != 0.0
- && __builtin_isless (__builtin_fabs (xh),
- __builtin_inf ()), 1))
- {
- double orig_xh;
- int save_round = fegetround ();
-
- /* Long double arithmetic, including the canonicalisation below,
- only works in round-to-nearest mode. */
- fesetround (FE_TONEAREST);
-
- /* Convert the high double to integer. */
- orig_xh = xh;
- hi = ldbl_nearbyint (xh);
-
- /* Subtract integral high part from the value. If the low double
- happens to be exactly 0.5 or -0.5, you might think that this
- subtraction could result in an incorrect conversion. For
- instance, subtracting an odd number would cause this function
- to round in the wrong direction. However, if we have a
- canonical long double with the low double 0.5 or -0.5, then the
- high double must be even. */
- xh -= hi;
- ldbl_canonicalize (&xh, &xl);
-
- /* Now convert the low double, adjusted for any remainder from the
- high double. */
- lo = ldbl_nearbyint (xh);
-
- xh -= lo;
- ldbl_canonicalize (&xh, &xl);
-
- switch (save_round)
- {
- case FE_TONEAREST:
- if (xl > 0.0 && xh == 0.5)
- lo += 1.0;
- else if (xl < 0.0 && -xh == 0.5)
- lo -= 1.0;
- break;
-
- case FE_TOWARDZERO:
- if (orig_xh < 0.0)
- goto do_up;
- /* Fall thru */
-
- case FE_DOWNWARD:
- if (xh < 0.0 || (xh == 0.0 && xl < 0.0))
- lo -= 1.0;
- break;
-
- case FE_UPWARD:
- do_up:
- if (xh > 0.0 || (xh == 0.0 && xl > 0.0))
- lo += 1.0;
- break;
- }
-
- /* Ensure the final value is canonical. In certain cases,
- rounding causes hi,lo calculated so far to be non-canonical. */
- xh = hi;
- xl = lo;
- ldbl_canonicalize (&xh, &xl);
-
- /* Ensure we return -0 rather than +0 when appropriate. */
- if (orig_xh < 0.0)
- xh = -__builtin_fabs (xh);
-
- fesetround (save_round);
- }
-
- return ldbl_pack (xh, xl);
-}
-
-long_double_symbol (libm, __rintl, rintl);