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touched up stix_strtoint()

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This commit is contained in:
hyunghwan.chung 2015-11-09 14:26:58 +00:00
parent 797fdc4c1f
commit df3f521220
8 changed files with 247 additions and 18 deletions
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105
stix/configure vendored
View File

@ -18074,6 +18074,111 @@ esac
LIBM=$LIBM
check some compiler builtins
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __builtin_memset" >&5
$as_echo_n "checking __builtin_memset... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
__builtin_memset ((void*)1, ' ', 10);
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
$as_echo "#define HAVE___BUILTIN_MEMSET 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __builtin_memcpy" >&5
$as_echo_n "checking __builtin_memcpy... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
__builtin_memcpy ((void*)1, (void*)2, 10);
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
$as_echo "#define HAVE___BUILTIN_MEMCPY 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __builtin_memmove" >&5
$as_echo_n "checking __builtin_memmove... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
__builtin_memmove ((void*)1, (void*)2, 10);
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
$as_echo "#define HAVE___BUILTIN_MEMMOVE 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __builtin_memcmp" >&5
$as_echo_n "checking __builtin_memcmp... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
int a = __builtin_memcmp ((void*)1, (void*)2, 10);
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
$as_echo "#define HAVE___BUILTIN_MEMCMP 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
$as_echo_n "checking for ANSI C header files... " >&6; }
if ${ac_cv_header_stdc+:} false; then :

33
stix/configure.ac
View File

@ -118,6 +118,39 @@ dnl check the math library (check if -lm is needed)
LT_LIB_M
AC_SUBST(LIBM, $LIBM)
check some compiler builtins
AC_MSG_CHECKING([__builtin_memset])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [__builtin_memset ((void*)1, ' ', 10);])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE___BUILTIN_MEMSET], [1], [__builtin_memset])],
[AC_MSG_RESULT(no)]
)
AC_MSG_CHECKING([__builtin_memcpy])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [__builtin_memcpy ((void*)1, (void*)2, 10);])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE___BUILTIN_MEMCPY], [1], [__builtin_memcpy])],
[AC_MSG_RESULT(no)]
)
AC_MSG_CHECKING([__builtin_memmove])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [__builtin_memmove ((void*)1, (void*)2, 10);])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE___BUILTIN_MEMMOVE], [1], [__builtin_memmove])],
[AC_MSG_RESULT(no)]
)
AC_MSG_CHECKING([__builtin_memcmp])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [int a = __builtin_memcmp ((void*)1, (void*)2, 10);])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE___BUILTIN_MEMCMP], [1], [__builtin_memcmp])],
[AC_MSG_RESULT(no)]
)
dnl check header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([stddef.h wchar.h wctype.h errno.h signal.h fcntl.h dirent.h])

50
stix/lib/bigint.c
View File

@ -87,7 +87,7 @@ static STIX_INLINE int is_integer (stix_t* stix, stix_oop_t oop)
c = STIX_CLASSOF(stix,oop);
/* TODO: is it better to introduct a special integer mark into the class itself */
/* TODO: is it better to introduce a special integer mark into the class itself */
return c == stix->_small_integer ||
c == stix->_large_positive_integer ||
c == stix->_large_negative_integer;
@ -615,12 +615,11 @@ stix_oop_t stix_strtoint (stix_t* stix, const stix_ooch_t* str, stix_oow_t len,
/* bytes */
outlen = ((stix_oow_t)(end - str) * exp + 7) / 8;
/* number of stix_oohw_t */
outlen = (outlen + STIX_SIZEOF(stix_oohw_t) - 1) / STIX_SIZEOF(stix_oohw_t);
/* TODO: use a precomputed table for outlen instead of calculating here */
outlen = (outlen + STIX_SIZEOF(hw[0]) - 1) / STIX_SIZEOF(hw[0]);
if (outlen > STIX_COUNTOF(hw))
{
hwp = stix_allocmem (stix, outlen * STIX_SIZEOF(stix_oohw_t));
hwp = stix_allocmem (stix, outlen * STIX_SIZEOF(hw[0]));
if (!hwp) return STIX_NULL;
}
else
@ -655,15 +654,37 @@ stix_oop_t stix_strtoint (stix_t* stix, const stix_ooch_t* str, stix_oow_t len,
}
else
{
stix_oow_t r1, r2;
stix_oow_t r1, r2, ub;
stix_oohw_t multiplier;
int dg, i, max_ndigits;
int dg, i, safe_ndigits;
w = 0;
ptr = start;
max_ndigits = 9; /* GET THIS */
outlen = (end - str) / max_ndigits + 1;
if (stix->bigint[radix].safe_ndigits > 0)
{
/* if the table entry has been initialized properly,
* take it instead of recalculation. */
safe_ndigits = stix->bigint[radix].safe_ndigits;
multiplier = stix->bigint[radix].multiplier;
}
else
{
r1 = 0;
ub = STIX_TYPE_MAX(stix_oohw_t) / radix - (radix - 1);
multiplier = 1;
for (safe_ndigits = 0; r1 <= ub; safe_ndigits++)
{
r1 = r1 * radix + (radix - 1);
multiplier *= radix;
}
/* safe_ndigits contains the number of digits that never
* cause overflow when computed normally with a native type. */
stix->bigint[radix].safe_ndigits = safe_ndigits;
stix->bigint[radix].multiplier = multiplier;
}
outlen = (end - str) / safe_ndigits + 1;
if (outlen > STIX_COUNTOF(hw))
{
hwp = stix_allocmem (stix, outlen * STIX_SIZEOF(stix_oohw_t));
@ -673,13 +694,12 @@ max_ndigits = 9; /* GET THIS */
{
hwp = hw;
}
multiplier = 1;
for (i = 0; i < max_ndigits; i++) multiplier *= radix;
STIX_ASSERT (ptr < end);
do
{
r1 = 0;
for (dg = 0; dg < max_ndigits; dg++)
for (dg = 0; dg < safe_ndigits; dg++)
{
if (ptr >= end)
{
@ -718,7 +738,7 @@ max_ndigits = 9; /* GET THIS */
}
if (r2) hwp[hwlen++] = r2;
}
while (dg >= max_ndigits);
while (ptr < end);
}
{ int i;
@ -729,6 +749,7 @@ printf ("%08x ", hwp[--i]);
printf ("\n");
}
STIX_ASSERT (hwlen > 1);
if (hwlen == 1) return STIX_OOP_FROM_SMINT((stix_ooi_t)hwp[0] * -neg);
else if (hwlen == 2)
{
@ -752,3 +773,8 @@ oops_einval:
stix->errnum = STIX_EINVAL;
return STIX_NULL;
}
stix_oop_t stix_inttostr (stix_t* stix, stix_oop_t num)
{
return STIX_NULL;
}

12
stix/lib/main.c
View File

@ -467,7 +467,10 @@ int main (int argc, char* argv[])
/*const stix_bch_t* xxx = "9999999999999999999999999999999999999999999999999999999999999999999999999999999999";*/
//const stix_bch_t* xxx = "2305843009213693953";
const stix_bch_t* xxx = "184467440737095516161111";
//const stix_bch_t* xxx = "184467440737095516161111";
const stix_bch_t* xxx = "999999999999999999999999";
const stix_bch_t* yyy = "1000000000000000000000000000000000000000000000000";
//const stix_bch_t* yyy = "1290812390812903812903812903812903812903481290381209381290381290381290831290381290381290831209381293712897361287361278631278361278631278631287361278361278";
stix_ooch_t buf[10240];
stix_oow_t xxxlen;
@ -476,7 +479,12 @@ stix_oow_t buflen;
xxxlen = stix_countbcstr(xxx);
buflen = STIX_COUNTOF(buf);
stix_utf8toucs (xxx, &xxxlen, buf, &buflen);
dump_object (stix, stix_strtoint (stix, buf, buflen, 16), "STRINT");
dump_object (stix, stix_strtoint (stix, buf, buflen, 10), "STRINT");
xxxlen = stix_countbcstr(yyy);
buflen = STIX_COUNTOF(buf);
stix_utf8toucs (yyy, &xxxlen, buf, &buflen);
dump_object (stix, stix_strtoint (stix, buf, buflen, 3), "STRINT");
}
{
stix_ooch_t x[] = { 'X', 't', 'r', 'i', 'n', 'g', '\0' };

12
stix/lib/stix-cfg.h.in
View File

@ -772,6 +772,18 @@
/* Define to 1 if you have the `_vsnwprintf' function. */
#undef HAVE__VSNWPRINTF
/* __builtin_memcmp */
#undef HAVE___BUILTIN_MEMCMP
/* __builtin_memcpy */
#undef HAVE___BUILTIN_MEMCPY
/* __builtin_memmove */
#undef HAVE___BUILTIN_MEMMOVE
/* __builtin_memset */
#undef HAVE___BUILTIN_MEMSET
/* __va_copy is available */
#undef HAVE___VA_COPY

5
stix/lib/stix-cmn.h
View File

@ -195,8 +195,13 @@
#elif defined(STIX_SIZEOF___INT128_T) && (STIX_SIZEOF___INT128_T == 16)
# define STIX_HAVE_UINT128_T
# define STIX_HAVE_INT128_T
#if defined(__clang__)
typedef __uint128_t stix_uint128_t;
typedef __int128_t stix_int128_t;
#else
typedef unsigned __int128_t stix_uint128_t;
typedef signed __int128_t stix_int128_t;
#endif
#else
/* no 128-bit integer */
#endif

32
stix/lib/stix-prv.h
View File

@ -58,10 +58,42 @@
#include <string.h>
#include <assert.h>
#if defined(__has_builtin)
# if __has_builtin(__builtin_memset)
# define STIX_MEMSET(dst,src,size) __builtin_memset(dst,src,size)
# else
# define STIX_MEMSET(dst,src,size) memset(dst,src,size)
# endif
# if __has_builtin(__builtin_memcpy)
# define STIX_MEMCPY(dst,src,size) __builtin_memcpy(dst,src,size)
# else
# define STIX_MEMCPY(dst,src,size) memcpy(dst,src,size)
# endif
# if __has_builtin(__builtin_memmove)
# define STIX_MEMMOVE(dst,src,size) __builtin_memmove(dst,src,size)
# else
# define STIX_MEMMOVE(dst,src,size) memmove(dst,src,size)
# endif
# if __has_builtin(__builtin_memcmp)
# define STIX_MEMCMP(dst,src,size) __builtin_memcmp(dst,src,size)
# else
# define STIX_MEMCMP(dst,src,size) memcmp(dst,src,size)
# endif
#elif defined(__GNUC__)
/* TODO: may need to check a gnuc version or use autoconf to check the availibility ? */
# define STIX_MEMSET(dst,src,size) __builtin_memset(dst,src,size)
# define STIX_MEMCPY(dst,src,size) __builtin_memcpy(dst,src,size)
# define STIX_MEMMOVE(dst,src,size) __builtin_memmove(dst,src,size)
# define STIX_MEMCMP(dst,src,size) __builtin_memcmp(dst,src,size)
#else
# define STIX_MEMSET(dst,src,size) memset(dst,src,size)
# define STIX_MEMCPY(dst,src,size) memcpy(dst,src,size)
# define STIX_MEMMOVE(dst,src,size) memmove(dst,src,size)
# define STIX_MEMCMP(dst,src,size) memcmp(dst,src,size)
#endif
#define STIX_ASSERT(x) assert(x)
#define STIX_ALIGN(x,y) ((((x) + (y) - 1) / (y)) * (y))

8
stix/lib/stix.h
View File

@ -699,6 +699,14 @@ struct stix_t
stix_ooi_t ip;
/* == END EXECUTION REGISTERS == */
/* == BIGINT CONVERSION == */
struct
{
int safe_ndigits;
stix_oow_t multiplier;
} bigint[36];
/* == END BIGINT CONVERSION == */
#if defined(STIX_INCLUDE_COMPILER)
stix_compiler_t* c;
#endif