mirror of
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Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
* malloc/malloc.c (_malloc_internal): Performance fix. Move
if statement out of loop.
* stdio/_itoa.c, stdio/_itoa.h: Complete rewrite. Much faster
implementation using GMP functions. Contributed by
Torbjorn Granlund and Ulrich Drepper.
* stdio/test_rdwr.c: Include <errno.h>.
* sysdeps/i386/i586/Implies: New file.
New highly optimized string functions for i[345]86.
* sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files.
* sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files.
* sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files.
* sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files.
* sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files.
* sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files.
* sysdeps/i386/i586/strlen.S: New file.
* sysdeps/i386/memchr.c: Removed. There is now an assembler version.
* sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did
not correspond to used values.
* sysdeps/unix/sysv/linux/nfs/nfs.h: New file. Simply a wrapper
around a kernel header file.
* sysdeps/unix/sysv/linux/Dist: Add it.
* sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers):
Likewise.
* sysdeps/unix/sysv/linux/local_lim.h: Rewrite. Instead of
defining ourself we use a kernel header file.
* sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system
call handler for i586.
* sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.
Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
* malloc/malloc.c (_malloc_internal): Performance fix. Move
if statement out of loop.
* stdio/_itoa.c, stdio/_itoa.h: Complete rewrite. Much faster
implementation using GMP functions. Contributed by
Torbjorn Granlund and Ulrich Drepper.
* stdio/test_rdwr.c: Include <errno.h>.
* sysdeps/i386/i586/Implies: New file.
New highly optimized string functions for i[345]86.
* sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files.
* sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files.
* sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files.
* sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files.
* sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files.
* sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files.
* sysdeps/i386/i586/strlen.S: New file.
* sysdeps/i386/memchr.c: Removed. There is now an assembler version.
* sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did
not correspond to used values.
* sysdeps/unix/sysv/linux/nfs/nfs.h: New file. Simply a wrapper
around a kernel header file.
* sysdeps/unix/sysv/linux/Dist: Add it.
* sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers):
Likewise.
* sysdeps/unix/sysv/linux/local_lim.h: Rewrite. Instead of
defining ourself we use a kernel header file.
* sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system
call handler for i586.
* sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.
This commit is contained in:
Roland McGrath
@ -19,11 +19,17 @@ along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if ! defined (alloca)
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#if defined (__GNUC__) || defined (__sparc__) || defined (sparc)
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#if defined (__GNUC__)
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#define alloca __builtin_alloca
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#endif
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#endif
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#if ! defined (alloca)
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#if defined (__sparc__) || defined (sparc) || defined (__sgi)
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#include <alloca.h>
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#endif
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#endif
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#ifndef NULL
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#define NULL 0L
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#endif
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@ -168,6 +174,7 @@ void _mp_default_free ();
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else \
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____mpn_sqr_n (prodp, up, size, tspace); \
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} while (0);
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#define assert(trueval) do {if (!(trueval)) abort ();} while (0)
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/* Structure for conversion between internal binary format and
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strings in base 2..36. */
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@ -197,9 +204,11 @@ struct bases
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extern const struct bases __mp_bases[];
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extern mp_size_t __gmp_default_fp_limb_precision;
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/* Divide the two-limb number in (NH,,NL) by D, with DI being a 32 bit
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approximation to (2**(2*BITS_PER_MP_LIMB))/D - (2**BITS_PER_MP_LIMB).
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Put the quotient in Q and the remainder in R. */
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/* Divide the two-limb number in (NH,,NL) by D, with DI being the largest
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limb not larger than (2**(2*BITS_PER_MP_LIMB))/D - (2**BITS_PER_MP_LIMB).
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If this would yield overflow, DI should be the largest possible number
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(i.e., only ones). For correct operation, the most significant bit of D
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has to be set. Put the quotient in Q and the remainder in R. */
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#define udiv_qrnnd_preinv(q, r, nh, nl, d, di) \
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do { \
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mp_limb _q, _ql, _r; \
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@ -226,6 +235,8 @@ extern mp_size_t __gmp_default_fp_limb_precision;
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(r) = _r; \
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(q) = _q; \
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} while (0)
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/* Like udiv_qrnnd_preinv, but for for any value D. DNORM is D shifted left
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so that its most significant bit is set. LGUP is ceil(log2(D)). */
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#define udiv_qrnnd_preinv2gen(q, r, nh, nl, d, di, dnorm, lgup) \
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do { \
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mp_limb n2, n10, n1, nadj, q1; \
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@ -243,6 +254,8 @@ extern mp_size_t __gmp_default_fp_limb_precision;
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(r) = _xl + ((d) & _xh); \
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(q) = _xh - q1; \
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} while (0)
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/* Exactly like udiv_qrnnd_preinv, but branch-free. It is not clear which
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version to use. */
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#define udiv_qrnnd_preinv2norm(q, r, nh, nl, d, di) \
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do { \
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mp_limb n2, n10, n1, nadj, q1; \
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@ -262,22 +275,49 @@ extern mp_size_t __gmp_default_fp_limb_precision;
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} while (0)
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#if defined (__GNUC__)
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/* Define stuff for longlong.h asm macros. */
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#if __GNUC_NEW_ATTR_MODE_SYNTAX
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typedef unsigned int UQItype __attribute__ ((mode ("QI")));
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typedef int SItype __attribute__ ((mode ("SI")));
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typedef unsigned int USItype __attribute__ ((mode ("SI")));
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typedef int DItype __attribute__ ((mode ("DI")));
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typedef unsigned int UDItype __attribute__ ((mode ("DI")));
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#else
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/* Define stuff for longlong.h. */
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typedef unsigned int UQItype __attribute__ ((mode (QI)));
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typedef int SItype __attribute__ ((mode (SI)));
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typedef unsigned int USItype __attribute__ ((mode (SI)));
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typedef int DItype __attribute__ ((mode (DI)));
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typedef unsigned int UDItype __attribute__ ((mode (DI)));
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#endif
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#else
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typedef unsigned char UQItype;
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typedef long SItype;
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typedef unsigned long USItype;
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#endif
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typedef mp_limb UWtype;
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typedef unsigned int UHWtype;
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#define W_TYPE_SIZE BITS_PER_MP_LIMB
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#ifndef IEEE_DOUBLE_BIG_ENDIAN
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#define IEEE_DOUBLE_BIG_ENDIAN 1
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#endif
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#if IEEE_DOUBLE_BIG_ENDIAN
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union ieee_double_extract
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{
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struct
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{
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unsigned long sig:1;
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unsigned long exp:11;
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unsigned long manh:20;
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unsigned long manl:32;
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} s;
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double d;
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};
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#else
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union ieee_double_extract
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{
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struct
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{
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unsigned long manl:32;
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unsigned long manh:20;
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unsigned long exp:11;
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unsigned long sig:1;
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} s;
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double d;
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};
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#endif
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