diff options
Diffstat (limited to 'newlib/libc/stdio/nano-vfprintf_float.c')
| -rw-r--r-- | newlib/libc/stdio/nano-vfprintf_float.c | 364 |
1 files changed, 0 insertions, 364 deletions
diff --git a/newlib/libc/stdio/nano-vfprintf_float.c b/newlib/libc/stdio/nano-vfprintf_float.c deleted file mode 100644 index aca24aec0..000000000 --- a/newlib/libc/stdio/nano-vfprintf_float.c +++ /dev/null @@ -1,364 +0,0 @@ -/* - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Chris Torek. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <newlib.h> - -#include <_ansi.h> -#include <reent.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <limits.h> -#include <stdint.h> -#include <wchar.h> -#include <sys/lock.h> -#include <stdarg.h> -#include "local.h" -#include "../stdlib/local.h" -#include "fvwrite.h" -#include "vfieeefp.h" -#include "nano-vfprintf_local.h" - -char *__cvt (struct _reent *data, _PRINTF_FLOAT_TYPE value, int ndigits, - int flags, char *sign, int *decpt, int ch, int *length, - char *buf); - -int __exponent (char *p0, int exp, int fmtch); - -#ifdef FLOATING_POINT - -/* Using reentrant DATA, convert finite VALUE into a string of digits - with no decimal point, using NDIGITS precision and FLAGS as guides - to whether trailing zeros must be included. Set *SIGN to nonzero - if VALUE was negative. Set *DECPT to the exponent plus one. Set - *LENGTH to the length of the returned string. CH must be one of - [aAeEfFgG]; if it is [aA], then the return string lives in BUF, - otherwise the return value shares the mprec reentrant storage. */ -char * -__cvt (struct _reent *data, _PRINTF_FLOAT_TYPE value, int ndigits, int flags, - char *sign, int *decpt, int ch, int *length, char *buf) -{ - int mode, dsgn; - char *digits, *bp, *rve; - union double_union tmp; - - tmp.d = value; - /* This will check for "< 0" and "-0.0". */ - if (word0 (tmp) & Sign_bit) - { - value = -value; - *sign = '-'; - } - else - *sign = '\000'; - - if (ch == 'f' || ch == 'F') - { - /* Ndigits after the decimal point. */ - mode = 3; - } - else - { - /* To obtain ndigits after the decimal point for the 'e' - and 'E' formats, round to ndigits + 1 significant figures. */ - if (ch == 'e' || ch == 'E') - { - ndigits++; - } - /* Ndigits significant digits. */ - mode = 2; - } - - digits = _DTOA_R (data, value, mode, ndigits, decpt, &dsgn, &rve); - - /* Print trailing zeros. */ - if ((ch != 'g' && ch != 'G') || flags & ALT) - { - bp = digits + ndigits; - if (ch == 'f' || ch == 'F') - { - if (*digits == '0' && value) - *decpt = -ndigits + 1; - bp += *decpt; - } - /* Kludge for __dtoa irregularity. */ - if (value == 0) - rve = bp; - while (rve < bp) - *rve++ = '0'; - } - *length = rve - digits; - return (digits); -} - -/* This function is copied from exponent in vfprintf.c with support for - C99 formats removed. We don't use the original function in order to - decouple nano implementation of formatted IO from the Newlib one. */ -int -__exponent (char *p0, int exp, int fmtch) -{ - register char *p, *t; - char expbuf[MAXEXPLEN]; -#define isa 0 - - p = p0; - *p++ = isa ? 'p' - 'a' + fmtch : fmtch; - if (exp < 0) - { - exp = -exp; - *p++ = '-'; - } - else - *p++ = '+'; - t = expbuf + MAXEXPLEN; - if (exp > 9) - { - do - { - *--t = to_char (exp % 10); - } - while ((exp /= 10) > 9); - *--t = to_char (exp); - for (; t < expbuf + MAXEXPLEN; *p++ = *t++); - } - else - { - if (!isa) - *p++ = '0'; - *p++ = to_char (exp); - } - return (p - p0); -} - -/* Decode and print floating point number specified by "eEfgG". */ -int -_printf_float (struct _reent *data, - struct _prt_data_t *pdata, - FILE * fp, - int (*pfunc) (struct _reent *, FILE *, _CONST char *, - size_t len), va_list * ap) -{ -#define _fpvalue (pdata->_double_) - - char *decimal_point = _localeconv_r (data)->decimal_point; - size_t decp_len = strlen (decimal_point); - /* Temporary negative sign for floats. */ - char softsign; - /* Integer value of exponent. */ - int expt; - /* Character count for expstr. */ - int expsize = 0; - /* Actual number of digits returned by cvt. */ - int ndig = 0; - char *cp; - int n; - /* Field size expanded by dprec(not for _printf_float). */ - int realsz; - char code = pdata->code; - - if (pdata->flags & LONGDBL) - { - _fpvalue = (double) GET_ARG (N, *ap, _LONG_DOUBLE); - } - else - { - _fpvalue = GET_ARG (N, *ap, double); - } - - /* Do this before tricky precision changes. - - If the output is infinite or NaN, leading - zeros are not permitted. Otherwise, scanf - could not read what printf wrote. */ - if (isinf (_fpvalue)) - { - if (_fpvalue < 0) - pdata->l_buf[0] = '-'; - if (code <= 'G') /* 'A', 'E', 'F', or 'G'. */ - cp = "INF"; - else - cp = "inf"; - pdata->size = 3; - pdata->flags &= ~ZEROPAD; - goto print_float; - } - if (isnan (_fpvalue)) - { - if (code <= 'G') /* 'A', 'E', 'F', or 'G'. */ - cp = "NAN"; - else - cp = "nan"; - pdata->size = 3; - pdata->flags &= ~ZEROPAD; - goto print_float; - } - - if (pdata->prec == -1) - { - pdata->prec = DEFPREC; - } - else if ((code == 'g' || code == 'G') && pdata->prec == 0) - { - pdata->prec = 1; - } - - pdata->flags |= FPT; - - cp = __cvt (data, _fpvalue, pdata->prec, pdata->flags, &softsign, - &expt, code, &ndig, cp); - - if (code == 'g' || code == 'G') - { - if (expt <= -4 || expt > pdata->prec) - /* 'e' or 'E'. */ - code -= 2; - else - code = 'g'; - } - if (code <= 'e') - { - /* 'a', 'A', 'e', or 'E' fmt. */ - --expt; - expsize = __exponent (pdata->expstr, expt, code); - pdata->size = expsize + ndig; - if (ndig > 1 || pdata->flags & ALT) - ++pdata->size; - } - else - { - if (code == 'f') - { - /* 'f' fmt. */ - if (expt > 0) - { - pdata->size = expt; - if (pdata->prec || pdata->flags & ALT) - pdata->size += pdata->prec + 1; - } - else - /* "0.X". */ - pdata->size = (pdata->prec || pdata->flags & ALT) - ? pdata->prec + 2 : 1; - } - else if (expt >= ndig) - { - /* Fixed g fmt. */ - pdata->size = expt; - if (pdata->flags & ALT) - ++pdata->size; - } - else - pdata->size = ndig + (expt > 0 ? 1 : 2 - expt); - pdata->lead = expt; - } - - if (softsign) - pdata->l_buf[0] = '-'; -print_float: - if (_printf_common (data, pdata, &realsz, fp, pfunc) == -1) - goto error; - - if ((pdata->flags & FPT) == 0) - { - PRINT (cp, pdata->size); - } - else - { - /* Glue together f_p fragments. */ - if (code >= 'f') - { - /* 'f' or 'g'. */ - if (_fpvalue == 0) - { - /* Kludge for __dtoa irregularity. */ - PRINT ("0", 1); - if (expt < ndig || pdata->flags & ALT) - { - PRINT (decimal_point, decp_len); - PAD (ndig - 1, pdata->zero); - } - } - else if (expt <= 0) - { - PRINT ("0", 1); - if (expt || ndig || pdata->flags & ALT) - { - PRINT (decimal_point, decp_len); - PAD (-expt, pdata->zero); - PRINT (cp, ndig); - } - } - else - { - char *convbuf = cp; - PRINTANDPAD (cp, convbuf + ndig, pdata->lead, pdata->zero); - cp += pdata->lead; - if (expt < ndig || pdata->flags & ALT) - PRINT (decimal_point, decp_len); - PRINTANDPAD (cp, convbuf + ndig, ndig - expt, pdata->zero); - } - } - else - { - /* 'a', 'A', 'e', or 'E'. */ - if (ndig > 1 || pdata->flags & ALT) - { - PRINT (cp, 1); - cp++; - PRINT (decimal_point, decp_len); - if (_fpvalue) - { - PRINT (cp, ndig - 1); - } - /* "0.[0..]". */ - else - /* __dtoa irregularity. */ - PAD (ndig - 1, pdata->zero); - } - else /* "XeYYY". */ - PRINT (cp, 1); - PRINT (pdata->expstr, expsize); - } - } - - /* Left-adjusting padding (always blank). */ - if (pdata->flags & LADJUST) - PAD (pdata->width - realsz, pdata->blank); - - return (pdata->width > realsz ? pdata->width : realsz); -error: - return -1; - -#undef _fpvalue -} - -#endif |