diff options
author | Ulrich Drepper <drepper@redhat.com> | 2000-01-29 02:54:27 +0000 |
---|---|---|
committer | Ulrich Drepper <drepper@redhat.com> | 2000-01-29 02:54:27 +0000 |
commit | 4295702fe36902ad82587748b918d828ce62c446 (patch) | |
tree | 538686004e11cb2af80a3be1e1fc5b95f859b4ff /stdio-common/_i18n_itowa.c | |
parent | 8217ddf5c6137488b6ea5b244f74c7668b800f83 (diff) | |
download | glibc-4295702fe36902ad82587748b918d828ce62c446.tar.gz glibc-4295702fe36902ad82587748b918d828ce62c446.tar.xz glibc-4295702fe36902ad82587748b918d828ce62c446.zip |
Update.
2000-01-28 Ulrich Drepper <drepper@cygnus.com> * locale/C-monetary.c: Add initializers for new fields. * locale/C-numeric.c: Likewise. * locale/Makefile (distribute): Add indigits.h, indigitswc.h, outdigits.h, and outdigitswc.h. * locale/langinfo.h: Add _NL_MONETARY_DECIMAL_POINT_WC, _NL_MONETARY_THOUSANDS_SEP_WC, _NL_NUMERIC_DECIMAL_POINT_WC, and _NL_NUMERIC_THOUSANDS_SEP_WC. * locale/indigits.h: New file. * locale/indigitswc.h: New file. * locale/outdigits.h: New file. * locale/outdigitswc.h: New file. * locale/programs/ld-monetary.c: Write out decimal point and thousands separator info in wide character form. * locale/programs/ld-numeric.c: Likewise. * stdio-common/Makefile (routines): Add _i18n_itoa and _i18n_itowa. (distribute): Add _i18n_itoa.h and _i18n_itowa.h. * stdio-common/_i18n_itoa.c: New file. * stdio-common/_i18n_itoa.h: New file. * stdio-common/_i18n_itowa.c: New file. * stdio-common/_i18n_itowa.h: New file. * stdio-common/printf-parse.h: Parse 'I' flag. * stdio-common/printf.h (struct printf_info): Add i18n field. * stdio-common/vfprintf.c: Implement 'I' flag to print using locales' outdigits.
Diffstat (limited to 'stdio-common/_i18n_itowa.c')
-rw-r--r-- | stdio-common/_i18n_itowa.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/stdio-common/_i18n_itowa.c b/stdio-common/_i18n_itowa.c new file mode 100644 index 0000000000..357f8a383b --- /dev/null +++ b/stdio-common/_i18n_itowa.c @@ -0,0 +1,267 @@ +/* Internal function for converting integers to string using locale + specific digits. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000. + + 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. */ + +#include <gmp-mparam.h> +#include <stdlib/gmp.h> +#include <stdlib/gmp-impl.h> +#include <stdlib/longlong.h> + +#include "_i18n_itowa.h" + + +/* Canonize environment. For some architectures not all values might + be defined in the GMP header files. */ +#ifndef UMUL_TIME +# define UMUL_TIME 1 +#endif +#ifndef UDIV_TIME +# define UDIV_TIME 3 +#endif + +/* Control memory layout. */ +#ifdef PACK +# undef PACK +# define PACK __attribute__ ((packed)) +#else +# define PACK +#endif + + +/* Declare local types. */ +struct base_table_t +{ +#if (UDIV_TIME > 2 * UMUL_TIME) + mp_limb_t base_multiplier; +#endif + char flag; + char post_shift; +#if BITS_PER_MP_LIMB == 32 + struct + { + char normalization_steps; + char ndigits; + mp_limb_t base PACK; +#if UDIV_TIME > 2 * UMUL_TIME + mp_limb_t base_ninv PACK; +#endif + } big; +#endif +}; + + +/* Variable in other file. */ +extern const struct base_table_t _itoa_base_table[]; + + +wchar_t * +_i18n_itowa (value, buflim) + unsigned long long int value; + wchar_t *buflim; +{ + const struct base_table_t *brec = &_itoa_base_table[8]; + +#if BITS_PER_MP_LIMB == 64 + mp_limb_t base_multiplier = brec->base_multiplier; + if (brec->flag) while (value != 0) + { + mp_limb_t quo, rem, x, dummy; + + umul_ppmm (x, dummy, value, base_multiplier); + quo = (x + ((value - x) >> 1)) >> (brec->post_shift - 1); + rem = value - quo * 10; + *--buflim = outdigitwc_value (rem); + value = quo; + } + else + while (value != 0) + { + mp_limb_t quo, rem, x, dummy; + + umul_ppmm (x, dummy, value, base_multiplier); + quo = x >> brec->post_shift; + rem = value - quo * 10; + *--buflim = outdigitwc_value (rem); + value = quo; + } +#endif +#if BITS_PER_MP_LIMB == 32 + mp_limb_t t[3]; + int n; + + /* First convert x0 to 1-3 words in base s->big.base. + Optimize for frequent cases of 32 bit numbers. */ + if ((mp_limb_t) (value >> 32) >= 1) + { +#if UDIV_TIME > 2 * UMUL_TIME || UDIV_NEEDS_NORMALIZATION + int big_normalization_steps = brec->big.normalization_steps; + mp_limb_t big_base_norm + = brec->big.base << big_normalization_steps; +#endif + if ((mp_limb_t) (value >> 32) >= brec->big.base) + { + mp_limb_t x1hi, x1lo, r; + /* If you want to optimize this, take advantage of + that the quotient in the first udiv_qrnnd will + always be very small. It might be faster just to + subtract in a tight loop. */ + +#if UDIV_TIME > 2 * UMUL_TIME + mp_limb_t x, xh, xl; + + if (big_normalization_steps == 0) + xh = 0; + else + xh = (mp_limb_t) (value >> (64 - big_normalization_steps)); + xl = (mp_limb_t) (value >> (32 - big_normalization_steps)); + udiv_qrnnd_preinv (x1hi, r, xh, xl, big_base_norm, + brec->big.base_ninv); + + xl = ((mp_limb_t) value) << big_normalization_steps; + udiv_qrnnd_preinv (x1lo, x, r, xl, big_base_norm, + brec->big.base_ninv); + t[2] = x >> big_normalization_steps; + + if (big_normalization_steps == 0) + xh = x1hi; + else + xh = ((x1hi << big_normalization_steps) + | (x1lo >> (32 - big_normalization_steps))); + xl = x1lo << big_normalization_steps; + udiv_qrnnd_preinv (t[0], x, xh, xl, big_base_norm, + brec->big.base_ninv); + t[1] = x >> big_normalization_steps; +#elif UDIV_NEEDS_NORMALIZATION + mp_limb_t x, xh, xl; + + if (big_normalization_steps == 0) + xh = 0; + else + xh = (mp_limb_t) (value >> 64 - big_normalization_steps); + xl = (mp_limb_t) (value >> 32 - big_normalization_steps); + udiv_qrnnd (x1hi, r, xh, xl, big_base_norm); + + xl = ((mp_limb_t) value) << big_normalization_steps; + udiv_qrnnd (x1lo, x, r, xl, big_base_norm); + t[2] = x >> big_normalization_steps; + + if (big_normalization_steps == 0) + xh = x1hi; + else + xh = ((x1hi << big_normalization_steps) + | (x1lo >> 32 - big_normalization_steps)); + xl = x1lo << big_normalization_steps; + udiv_qrnnd (t[0], x, xh, xl, big_base_norm); + t[1] = x >> big_normalization_steps; +#else + udiv_qrnnd (x1hi, r, 0, (mp_limb_t) (value >> 32), + brec->big.base); + udiv_qrnnd (x1lo, t[2], r, (mp_limb_t) value, brec->big.base); + udiv_qrnnd (t[0], t[1], x1hi, x1lo, brec->big.base); +#endif + n = 3; + } + else + { +#if (UDIV_TIME > 2 * UMUL_TIME) + mp_limb_t x; + + value <<= brec->big.normalization_steps; + udiv_qrnnd_preinv (t[0], x, (mp_limb_t) (value >> 32), + (mp_limb_t) value, big_base_norm, + brec->big.base_ninv); + t[1] = x >> brec->big.normalization_steps; +#elif UDIV_NEEDS_NORMALIZATION + mp_limb_t x; + + value <<= big_normalization_steps; + udiv_qrnnd (t[0], x, (mp_limb_t) (value >> 32), + (mp_limb_t) value, big_base_norm); + t[1] = x >> big_normalization_steps; +#else + udiv_qrnnd (t[0], t[1], (mp_limb_t) (value >> 32), + (mp_limb_t) value, brec->big.base); +#endif + n = 2; + } + } + else + { + t[0] = value; + n = 1; + } + + /* Convert the 1-3 words in t[], word by word, to ASCII. */ + do + { + mp_limb_t ti = t[--n]; + int ndig_for_this_limb = 0; + +#if UDIV_TIME > 2 * UMUL_TIME + mp_limb_t base_multiplier = brec->base_multiplier; + if (brec->flag) + while (ti != 0) + { + mp_limb_t quo, rem, x, dummy; + + umul_ppmm (x, dummy, ti, base_multiplier); + quo = (x + ((ti - x) >> 1)) >> (brec->post_shift - 1); + rem = ti - quo * 10; + *--buflim = outdigitwc_value (rem); + ti = quo; + ++ndig_for_this_limb; + } + else + while (ti != 0) + { + mp_limb_t quo, rem, x, dummy; + + umul_ppmm (x, dummy, ti, base_multiplier); + quo = x >> brec->post_shift; + rem = ti - quo * 10; + *--buflim = outdigitwc_value (rem); + ti = quo; + ++ndig_for_this_limb; + } +#else + while (ti != 0) + { + mp_limb_t quo, rem; + + quo = ti / 10; + rem = ti % 10; + *--buflim = outdigitwc_value (rem); + ti = quo; + ++ndig_for_this_limb; + } +#endif + /* If this wasn't the most significant word, pad with zeros. */ + if (n != 0) + while (ndig_for_this_limb < brec->big.ndigits) + { + *--buflim = '0'; + ++ndig_for_this_limb; + } + } + while (n != 0); +#endif + + return buflim; +} |