2006-01-28 08:15:15 +08:00
|
|
|
/* Ceil (round to +inf) long double floating-point values.
|
|
|
|
IBM extended format long double version.
|
2013-01-03 03:01:50 +08:00
|
|
|
Copyright (C) 2006-2013 Free Software Foundation, Inc.
|
2006-01-28 08:15:15 +08:00
|
|
|
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
|
2012-02-10 07:18:22 +08:00
|
|
|
License along with the GNU C Library; if not, see
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
2006-01-28 08:15:15 +08:00
|
|
|
|
|
|
|
#include <math.h>
|
|
|
|
#include <math_ldbl_opt.h>
|
|
|
|
#include <float.h>
|
|
|
|
#include <ieee754.h>
|
|
|
|
|
|
|
|
|
|
|
|
long double
|
|
|
|
__ceill (long double x)
|
|
|
|
{
|
[BZ #2423]
2006-03-07 Jakub Jelinek <jakub@redhat.com>
[BZ #2423]
* math/libm-test.inc [TEST_LDOUBLE] (ceil_test, floor_test, rint_test,
round_test, trunc_test): Only run some of the new tests if
LDBL_MANT_DIG > 100.
2006-03-03 Steven Munroe <sjmunroe@us.ibm.com>
Alan Modra <amodra@bigpond.net.au>
* sysdeps/powerpc/fpu/fenv_libc.h (__fegetround, __fesetround):
Define inline implementations.
* sysdeps/powerpc/fpu/fegetround.c: Use __fegetround.
* sysdeps/powerpc/fpu/fesetround.c: Use __fesetround.
* sysdeps/powerpc/fpu/math_ldbl.h: New file.
[BZ #2423]
* math/libm-test.inc [TEST_LDOUBLE] (ceil_test, floor_test, rint_test,
round_test, trunc_test): Add new tests.
* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h
(EXTRACT_IBM_EXTENDED_MANTISSA, INSERT_IBM_EXTENDED_MANTISSA):
Removed, replaced with ...
(ldbl_extract_mantissa, ldbl_insert_mantissa, ldbl_pack, ldbl_unpack,
ldbl_canonicalise, ldbl_nearbyint): New functions.
* sysdeps/ieee754/ldbl-128ibm/e_fmodl.c (__ieee754_fmodl): Replace
EXTRACT_IBM_EXTENDED_MANTISSA and INSERT_IBM_EXTENDED_MANTISSA
with ldbl_extract_mantissa and ldbl_insert_mantissa.
* sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c (__ieee754_rem_pio2l):
Replace EXTRACT_IBM_EXTENDED_MANTISSA with ldbl_extract_mantissa.
(ldbl_extract_mantissa, ldbl_insert_mantissa): New inline functions.
* sysdeps/ieee754/ldbl-128ibm/s_ceill.c (__ceill): Handle rounding
that spans doubles in IBM long double format.
* sysdeps/ieee754/ldbl-128ibm/s_floorl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_rintl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_roundl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_truncl.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_rintl.S: File removed.
2006-03-16 19:47:24 +08:00
|
|
|
double xh, xl, hi, lo;
|
2006-01-28 08:15:15 +08:00
|
|
|
|
[BZ #2423]
2006-03-07 Jakub Jelinek <jakub@redhat.com>
[BZ #2423]
* math/libm-test.inc [TEST_LDOUBLE] (ceil_test, floor_test, rint_test,
round_test, trunc_test): Only run some of the new tests if
LDBL_MANT_DIG > 100.
2006-03-03 Steven Munroe <sjmunroe@us.ibm.com>
Alan Modra <amodra@bigpond.net.au>
* sysdeps/powerpc/fpu/fenv_libc.h (__fegetround, __fesetround):
Define inline implementations.
* sysdeps/powerpc/fpu/fegetround.c: Use __fegetround.
* sysdeps/powerpc/fpu/fesetround.c: Use __fesetround.
* sysdeps/powerpc/fpu/math_ldbl.h: New file.
[BZ #2423]
* math/libm-test.inc [TEST_LDOUBLE] (ceil_test, floor_test, rint_test,
round_test, trunc_test): Add new tests.
* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h
(EXTRACT_IBM_EXTENDED_MANTISSA, INSERT_IBM_EXTENDED_MANTISSA):
Removed, replaced with ...
(ldbl_extract_mantissa, ldbl_insert_mantissa, ldbl_pack, ldbl_unpack,
ldbl_canonicalise, ldbl_nearbyint): New functions.
* sysdeps/ieee754/ldbl-128ibm/e_fmodl.c (__ieee754_fmodl): Replace
EXTRACT_IBM_EXTENDED_MANTISSA and INSERT_IBM_EXTENDED_MANTISSA
with ldbl_extract_mantissa and ldbl_insert_mantissa.
* sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c (__ieee754_rem_pio2l):
Replace EXTRACT_IBM_EXTENDED_MANTISSA with ldbl_extract_mantissa.
(ldbl_extract_mantissa, ldbl_insert_mantissa): New inline functions.
* sysdeps/ieee754/ldbl-128ibm/s_ceill.c (__ceill): Handle rounding
that spans doubles in IBM long double format.
* sysdeps/ieee754/ldbl-128ibm/s_floorl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_rintl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_roundl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_truncl.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_rintl.S: File removed.
2006-03-16 19:47:24 +08:00
|
|
|
ldbl_unpack (x, &xh, &xl);
|
2006-01-28 08:15:15 +08:00
|
|
|
|
[BZ #2423]
2006-03-07 Jakub Jelinek <jakub@redhat.com>
[BZ #2423]
* math/libm-test.inc [TEST_LDOUBLE] (ceil_test, floor_test, rint_test,
round_test, trunc_test): Only run some of the new tests if
LDBL_MANT_DIG > 100.
2006-03-03 Steven Munroe <sjmunroe@us.ibm.com>
Alan Modra <amodra@bigpond.net.au>
* sysdeps/powerpc/fpu/fenv_libc.h (__fegetround, __fesetround):
Define inline implementations.
* sysdeps/powerpc/fpu/fegetround.c: Use __fegetround.
* sysdeps/powerpc/fpu/fesetround.c: Use __fesetround.
* sysdeps/powerpc/fpu/math_ldbl.h: New file.
[BZ #2423]
* math/libm-test.inc [TEST_LDOUBLE] (ceil_test, floor_test, rint_test,
round_test, trunc_test): Add new tests.
* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h
(EXTRACT_IBM_EXTENDED_MANTISSA, INSERT_IBM_EXTENDED_MANTISSA):
Removed, replaced with ...
(ldbl_extract_mantissa, ldbl_insert_mantissa, ldbl_pack, ldbl_unpack,
ldbl_canonicalise, ldbl_nearbyint): New functions.
* sysdeps/ieee754/ldbl-128ibm/e_fmodl.c (__ieee754_fmodl): Replace
EXTRACT_IBM_EXTENDED_MANTISSA and INSERT_IBM_EXTENDED_MANTISSA
with ldbl_extract_mantissa and ldbl_insert_mantissa.
* sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c (__ieee754_rem_pio2l):
Replace EXTRACT_IBM_EXTENDED_MANTISSA with ldbl_extract_mantissa.
(ldbl_extract_mantissa, ldbl_insert_mantissa): New inline functions.
* sysdeps/ieee754/ldbl-128ibm/s_ceill.c (__ceill): Handle rounding
that spans doubles in IBM long double format.
* sysdeps/ieee754/ldbl-128ibm/s_floorl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_rintl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_roundl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_truncl.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_rintl.S: File removed.
2006-03-16 19:47:24 +08:00
|
|
|
/* Return Inf, Nan, +/-0 unchanged. */
|
|
|
|
if (__builtin_expect (xh != 0.0
|
|
|
|
&& __builtin_isless (__builtin_fabs (xh),
|
|
|
|
__builtin_inf ()), 1))
|
2006-02-01 02:56:42 +08:00
|
|
|
{
|
[BZ #2423]
2006-03-07 Jakub Jelinek <jakub@redhat.com>
[BZ #2423]
* math/libm-test.inc [TEST_LDOUBLE] (ceil_test, floor_test, rint_test,
round_test, trunc_test): Only run some of the new tests if
LDBL_MANT_DIG > 100.
2006-03-03 Steven Munroe <sjmunroe@us.ibm.com>
Alan Modra <amodra@bigpond.net.au>
* sysdeps/powerpc/fpu/fenv_libc.h (__fegetround, __fesetround):
Define inline implementations.
* sysdeps/powerpc/fpu/fegetround.c: Use __fegetround.
* sysdeps/powerpc/fpu/fesetround.c: Use __fesetround.
* sysdeps/powerpc/fpu/math_ldbl.h: New file.
[BZ #2423]
* math/libm-test.inc [TEST_LDOUBLE] (ceil_test, floor_test, rint_test,
round_test, trunc_test): Add new tests.
* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h
(EXTRACT_IBM_EXTENDED_MANTISSA, INSERT_IBM_EXTENDED_MANTISSA):
Removed, replaced with ...
(ldbl_extract_mantissa, ldbl_insert_mantissa, ldbl_pack, ldbl_unpack,
ldbl_canonicalise, ldbl_nearbyint): New functions.
* sysdeps/ieee754/ldbl-128ibm/e_fmodl.c (__ieee754_fmodl): Replace
EXTRACT_IBM_EXTENDED_MANTISSA and INSERT_IBM_EXTENDED_MANTISSA
with ldbl_extract_mantissa and ldbl_insert_mantissa.
* sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c (__ieee754_rem_pio2l):
Replace EXTRACT_IBM_EXTENDED_MANTISSA with ldbl_extract_mantissa.
(ldbl_extract_mantissa, ldbl_insert_mantissa): New inline functions.
* sysdeps/ieee754/ldbl-128ibm/s_ceill.c (__ceill): Handle rounding
that spans doubles in IBM long double format.
* sysdeps/ieee754/ldbl-128ibm/s_floorl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_rintl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_roundl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_truncl.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_rintl.S: File removed.
2006-03-16 19:47:24 +08:00
|
|
|
double orig_xh;
|
|
|
|
|
|
|
|
/* Long double arithmetic, including the canonicalisation below,
|
|
|
|
only works in round-to-nearest mode. */
|
|
|
|
|
|
|
|
/* Convert the high double to integer. */
|
|
|
|
orig_xh = xh;
|
|
|
|
hi = ldbl_nearbyint (xh);
|
|
|
|
|
|
|
|
/* Subtract integral high part from the value. */
|
|
|
|
xh -= hi;
|
|
|
|
ldbl_canonicalize (&xh, &xl);
|
|
|
|
|
|
|
|
/* Now convert the low double, adjusted for any remainder from the
|
|
|
|
high double. */
|
|
|
|
lo = ldbl_nearbyint (xh);
|
|
|
|
|
|
|
|
/* Adjust the result when the remainder is non-zero. nearbyint
|
|
|
|
rounds values to the nearest integer, and values halfway
|
|
|
|
between integers to the nearest even integer. ceill must
|
|
|
|
round towards +Inf. */
|
|
|
|
xh -= lo;
|
|
|
|
ldbl_canonicalize (&xh, &xl);
|
|
|
|
|
|
|
|
if (xh > 0.0 || (xh == 0.0 && xl > 0.0))
|
|
|
|
lo += 1.0;
|
|
|
|
|
|
|
|
/* 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);
|
2006-01-28 08:15:15 +08:00
|
|
|
}
|
|
|
|
|
[BZ #2423]
2006-03-07 Jakub Jelinek <jakub@redhat.com>
[BZ #2423]
* math/libm-test.inc [TEST_LDOUBLE] (ceil_test, floor_test, rint_test,
round_test, trunc_test): Only run some of the new tests if
LDBL_MANT_DIG > 100.
2006-03-03 Steven Munroe <sjmunroe@us.ibm.com>
Alan Modra <amodra@bigpond.net.au>
* sysdeps/powerpc/fpu/fenv_libc.h (__fegetround, __fesetround):
Define inline implementations.
* sysdeps/powerpc/fpu/fegetround.c: Use __fegetround.
* sysdeps/powerpc/fpu/fesetround.c: Use __fesetround.
* sysdeps/powerpc/fpu/math_ldbl.h: New file.
[BZ #2423]
* math/libm-test.inc [TEST_LDOUBLE] (ceil_test, floor_test, rint_test,
round_test, trunc_test): Add new tests.
* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h
(EXTRACT_IBM_EXTENDED_MANTISSA, INSERT_IBM_EXTENDED_MANTISSA):
Removed, replaced with ...
(ldbl_extract_mantissa, ldbl_insert_mantissa, ldbl_pack, ldbl_unpack,
ldbl_canonicalise, ldbl_nearbyint): New functions.
* sysdeps/ieee754/ldbl-128ibm/e_fmodl.c (__ieee754_fmodl): Replace
EXTRACT_IBM_EXTENDED_MANTISSA and INSERT_IBM_EXTENDED_MANTISSA
with ldbl_extract_mantissa and ldbl_insert_mantissa.
* sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c (__ieee754_rem_pio2l):
Replace EXTRACT_IBM_EXTENDED_MANTISSA with ldbl_extract_mantissa.
(ldbl_extract_mantissa, ldbl_insert_mantissa): New inline functions.
* sysdeps/ieee754/ldbl-128ibm/s_ceill.c (__ceill): Handle rounding
that spans doubles in IBM long double format.
* sysdeps/ieee754/ldbl-128ibm/s_floorl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_rintl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_roundl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_truncl.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_rintl.S: File removed.
2006-03-16 19:47:24 +08:00
|
|
|
return ldbl_pack (xh, xl);
|
2006-01-28 08:15:15 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
long_double_symbol (libm, __ceill, ceill);
|