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m68k specific llrint implementation.

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This commit is contained in:
Ulrich Drepper 1997-11-11 23:48:16 +00:00
parent d391bc58dd
commit d2d2125ecd
2 changed files with 131 additions and 0 deletions
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66
sysdeps/m68k/fpu/s_llrintf.c Normal file
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/* Round argument to nearest integral value according to current rounding
direction.
Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
The GNU C 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 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C 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 __LIBC_M81_MATH_INLINES
#include <math.h>
#include "math_private.h"
long long int
__llrintf (float x)
{
int32_t e;
u_int32_t i, s;
long long int result;
x = __m81_u(__rintf) (x);
GET_FLOAT_WORD (i, x);
e = ((i >> 23) & 0xff) - 0x7f;
if (e < 0)
return 0;
s = i;
i &= 0x7fffff;
i |= 0x800000;
if (e < 63)
{
if (e > 55)
result = (long long int) (i << (e - 55)) << 32;
else if (e > 31)
result = (((long long int) (i >> (55 - e)) << 32) | (i << (e - 23)));
else if (e > 23)
result = i << (e - 23);
else
result = i >> (23 - e);
if (s & 0x80000000)
result = -result;
}
else
/* The number is too large or not finite. The standard leaves it
undefined what to return when the number is too large to fit in a
`long long int'. */
result = -1LL;
return result;
}
weak_alias (__llrintf, llrintf)

65
sysdeps/m68k/fpu/s_llrintl.c Normal file
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/* Round argument to nearest integral value according to current rounding
direction.
Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
The GNU C 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 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C 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 __LIBC_M81_MATH_INLINES
#include <math.h>
#include "math_private.h"
long long int
__llrintl (long double x)
{
int32_t e, s;
u_int32_t h, l;
long long int result;
x = __m81_u(__rintl) (x);
GET_LDOUBLE_WORDS (e, h, l, x);
s = e;
e = (e & 0x7fff) - 0x3fff;
if (e < 0)
return 0;
if (e < 63)
{
if (e > 31)
{
l >>= 63 - e;
l |= h << (e - 31);
h >>= 63 - e;
result = ((long long int) h << 32) | l;
}
else
result = h >> (31 - e);
if (s & 0x8000)
result = -result;
}
else
/* The number is too large or not finite. The standard leaves it
undefined what to return when the number is too large to fit in a
`long long int'. */
result = -1LL;
return result;
}
weak_alias (__llrintl, llrintl)