diff options
Diffstat (limited to 'misc')
| -rw-r--r-- | misc/efgcvt-dbl-macros.h | 52 | ||||
| -rw-r--r-- | misc/efgcvt-ldbl-macros.h | 59 | ||||
| -rw-r--r-- | misc/efgcvt-template.c | 78 | ||||
| -rw-r--r-- | misc/efgcvt.c | 101 | ||||
| -rw-r--r-- | misc/efgcvt_r-template.c | 196 | ||||
| -rw-r--r-- | misc/efgcvt_r.c | 234 | ||||
| -rw-r--r-- | misc/qefgcvt.c | 38 | ||||
| -rw-r--r-- | misc/qefgcvt_r.c | 51 |
8 files changed, 424 insertions, 385 deletions
diff --git a/misc/efgcvt-dbl-macros.h b/misc/efgcvt-dbl-macros.h new file mode 100644 index 0000000000..17e01e77e3 --- /dev/null +++ b/misc/efgcvt-dbl-macros.h @@ -0,0 +1,52 @@ +/* Macros for the implementation of *cvt functions, double version. + Copyright (C) 1995-2019 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <float.h> + +#define FLOAT_TYPE double +#define FUNC_PREFIX +#define FLOAT_FMT_FLAG +#define FLOAT_NAME_EXT +#define FLOAT_MIN_10_EXP DBL_MIN_10_EXP +/* Actually we have to write (DBL_DIG + log10 (DBL_MAX_10_EXP)) but we + don't have log10 available in the preprocessor. */ +#define MAXDIG (NDIGIT_MAX + 3) +#define FCVT_MAXDIG (DBL_MAX_10_EXP + MAXDIG) +#if DBL_MANT_DIG == 53 +# define NDIGIT_MAX 17 +#elif DBL_MANT_DIG == 24 +# define NDIGIT_MAX 9 +#elif DBL_MANT_DIG == 56 +# define NDIGIT_MAX 18 +#else +/* See IEEE 854 5.6, table 2 for this formula. Unfortunately we need a + compile time constant here, so we cannot use it. */ +# error "NDIGIT_MAX must be precomputed" +# define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * DBL_MANT_DIG + 1.0))) +#endif +#if DBL_MIN_10_EXP == -37 +# define FLOAT_MIN_10_NORM 1.0e-37 +#elif DBL_MIN_10_EXP == -307 +# define FLOAT_MIN_10_NORM 1.0e-307 +#elif DBL_MIN_10_EXP == -4931 +# define FLOAT_MIN_10_NORM 1.0e-4931 +#else +/* libc can't depend on libm. */ +# error "FLOAT_MIN_10_NORM must be precomputed" +# define FLOAT_MIN_10_NORM exp10 (DBL_MIN_10_EXP) +#endif diff --git a/misc/efgcvt-ldbl-macros.h b/misc/efgcvt-ldbl-macros.h new file mode 100644 index 0000000000..38470d93ab --- /dev/null +++ b/misc/efgcvt-ldbl-macros.h @@ -0,0 +1,59 @@ +/* Macros for the implementation of *cvt functions, long double version. + Copyright (C) 1996-2019 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <float.h> + +#define FLOAT_TYPE long double +#define FUNC_PREFIX q +#define FLOAT_FMT_FLAG "L" +#define FLOAT_NAME_EXT l +#define FLOAT_MIN_10_EXP LDBL_MIN_10_EXP +/* Actually we have to write (LDBL_DIG + log10 (LDBL_MAX_10_EXP)) but + we don't have log10 available in the preprocessor. Since we cannot + assume anything on the used `long double' format be generous. */ +#define MAXDIG (NDIGIT_MAX + 12) +#define FCVT_MAXDIG (LDBL_MAX_10_EXP + MAXDIG) +#if LDBL_MANT_DIG == 64 +# define NDIGIT_MAX 21 +#elif LDBL_MANT_DIG == 53 +# define NDIGIT_MAX 17 +#elif LDBL_MANT_DIG == 113 +# define NDIGIT_MAX 36 +#elif LDBL_MANT_DIG == 106 +# define NDIGIT_MAX 34 +#elif LDBL_MANT_DIG == 56 +# define NDIGIT_MAX 18 +#else +/* See IEEE 854 5.6, table 2 for this formula. Unfortunately we need a + compile time constant here, so we cannot use it. */ +# error "NDIGIT_MAX must be precomputed" +# define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * LDBL_MANT_DIG + 1.0))) +#endif +#if LDBL_MIN_10_EXP == -37 +# define FLOAT_MIN_10_NORM 1.0e-37L +#elif LDBL_MIN_10_EXP == -291 +# define FLOAT_MIN_10_NORM 1.0e-291L +#elif LDBL_MIN_10_EXP == -307 +# define FLOAT_MIN_10_NORM 1.0e-307L +#elif LDBL_MIN_10_EXP == -4931 +# define FLOAT_MIN_10_NORM 1.0e-4931L +#else +/* libc can't depend on libm. */ +# error "FLOAT_MIN_10_NORM must be precomputed" +# define FLOAT_MIN_10_NORM exp10l (LDBL_MIN_10_EXP) +#endif diff --git a/misc/efgcvt-template.c b/misc/efgcvt-template.c new file mode 100644 index 0000000000..aeb4e1ea01 --- /dev/null +++ b/misc/efgcvt-template.c @@ -0,0 +1,78 @@ +/* Compatibility functions for floating point formatting. + Copyright (C) 1995-2019 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <math.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/param.h> +#include <libc-lock.h> +#include <math_ldbl_opt.h> + +#define APPEND(a, b) APPEND2 (a, b) +#define APPEND2(a, b) a##b +#define __APPEND(a, b) __APPEND2 (a, b) +#define __APPEND2(a, b) __##a##b + + +#define FCVT_BUFFER APPEND (FUNC_PREFIX, fcvt_buffer) +#define FCVT_BUFPTR APPEND (FUNC_PREFIX, fcvt_bufptr) +#define ECVT_BUFFER APPEND (FUNC_PREFIX, ecvt_buffer) + + +static char FCVT_BUFFER[MAXDIG]; +static char ECVT_BUFFER[MAXDIG]; +libc_freeres_ptr (static char *FCVT_BUFPTR); + +char * +__APPEND (FUNC_PREFIX, fcvt) (FLOAT_TYPE value, int ndigit, int *decpt, + int *sign) +{ + if (FCVT_BUFPTR == NULL) + { + if (__APPEND (FUNC_PREFIX, fcvt_r) (value, ndigit, decpt, sign, + FCVT_BUFFER, MAXDIG) != -1) + return FCVT_BUFFER; + + FCVT_BUFPTR = (char *) malloc (FCVT_MAXDIG); + if (FCVT_BUFPTR == NULL) + return FCVT_BUFFER; + } + + (void) __APPEND (FUNC_PREFIX, fcvt_r) (value, ndigit, decpt, sign, + FCVT_BUFPTR, FCVT_MAXDIG); + + return FCVT_BUFPTR; +} + + +char * +__APPEND (FUNC_PREFIX, ecvt) (FLOAT_TYPE value, int ndigit, int *decpt, + int *sign) +{ + (void) __APPEND (FUNC_PREFIX, ecvt_r) (value, ndigit, decpt, sign, + ECVT_BUFFER, MAXDIG); + + return ECVT_BUFFER; +} + +char * +__APPEND (FUNC_PREFIX, gcvt) (FLOAT_TYPE value, int ndigit, char *buf) +{ + sprintf (buf, "%.*" FLOAT_FMT_FLAG "g", MIN (ndigit, NDIGIT_MAX), value); + return buf; +} diff --git a/misc/efgcvt.c b/misc/efgcvt.c index 492e4e8086..9021b03bca 100644 --- a/misc/efgcvt.c +++ b/misc/efgcvt.c @@ -1,4 +1,4 @@ -/* Compatibility functions for floating point formatting. +/* Double versions of *cvt_r functions. Copyright (C) 1995-2019 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -16,107 +16,16 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#include <math.h> -#include <stdio.h> -#include <stdlib.h> -#include <sys/param.h> -#include <float.h> -#include <libc-lock.h> -#include <math_ldbl_opt.h> - -#ifndef FLOAT_TYPE -# define FLOAT_TYPE double -# define FUNC_PREFIX -# define FLOAT_FMT_FLAG -/* Actually we have to write (DBL_DIG + log10 (DBL_MAX_10_EXP)) but we - don't have log10 available in the preprocessor. */ -# define MAXDIG (NDIGIT_MAX + 3) -# define FCVT_MAXDIG (DBL_MAX_10_EXP + MAXDIG) -# if DBL_MANT_DIG == 53 -# define NDIGIT_MAX 17 -# elif DBL_MANT_DIG == 24 -# define NDIGIT_MAX 9 -# elif DBL_MANT_DIG == 56 -# define NDIGIT_MAX 18 -# else -/* See IEEE 854 5.6, table 2 for this formula. Unfortunately we need a - compile time constant here, so we cannot use it. */ -# error "NDIGIT_MAX must be precomputed" -# define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * DBL_MANT_DIG + 1.0))) -# endif -#else -# define LONG_DOUBLE_CVT -#endif - -#define APPEND(a, b) APPEND2 (a, b) -#define APPEND2(a, b) a##b -#define __APPEND(a, b) __APPEND2 (a, b) -#define __APPEND2(a, b) __##a##b - - -#define FCVT_BUFFER APPEND (FUNC_PREFIX, fcvt_buffer) -#define FCVT_BUFPTR APPEND (FUNC_PREFIX, fcvt_bufptr) -#define ECVT_BUFFER APPEND (FUNC_PREFIX, ecvt_buffer) - - -static char FCVT_BUFFER[MAXDIG]; -static char ECVT_BUFFER[MAXDIG]; -libc_freeres_ptr (static char *FCVT_BUFPTR); - -char * -__APPEND (FUNC_PREFIX, fcvt) (FLOAT_TYPE value, int ndigit, int *decpt, - int *sign) -{ - if (FCVT_BUFPTR == NULL) - { - if (__APPEND (FUNC_PREFIX, fcvt_r) (value, ndigit, decpt, sign, - FCVT_BUFFER, MAXDIG) != -1) - return FCVT_BUFFER; - - FCVT_BUFPTR = (char *) malloc (FCVT_MAXDIG); - if (FCVT_BUFPTR == NULL) - return FCVT_BUFFER; - } - - (void) __APPEND (FUNC_PREFIX, fcvt_r) (value, ndigit, decpt, sign, - FCVT_BUFPTR, FCVT_MAXDIG); - - return FCVT_BUFPTR; -} - - -char * -__APPEND (FUNC_PREFIX, ecvt) (FLOAT_TYPE value, int ndigit, int *decpt, - int *sign) -{ - (void) __APPEND (FUNC_PREFIX, ecvt_r) (value, ndigit, decpt, sign, - ECVT_BUFFER, MAXDIG); - - return ECVT_BUFFER; -} - -char * -__APPEND (FUNC_PREFIX, gcvt) (FLOAT_TYPE value, int ndigit, char *buf) -{ - sprintf (buf, "%.*" FLOAT_FMT_FLAG "g", MIN (ndigit, NDIGIT_MAX), value); - return buf; -} +#include <efgcvt-dbl-macros.h> +#include <efgcvt-template.c> #if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0) -# ifdef LONG_DOUBLE_CVT -# define cvt_symbol(symbol) \ - cvt_symbol_1 (libc, __APPEND (FUNC_PREFIX, symbol), \ - APPEND (FUNC_PREFIX, symbol), GLIBC_2_4) -# define cvt_symbol_1(lib, local, symbol, version) \ - versioned_symbol (lib, local, symbol, version) -# else -# define cvt_symbol(symbol) \ +# define cvt_symbol(symbol) \ cvt_symbol_1 (libc, __APPEND (FUNC_PREFIX, symbol), \ APPEND (q, symbol), GLIBC_2_0); \ strong_alias (__APPEND (FUNC_PREFIX, symbol), APPEND (FUNC_PREFIX, symbol)) -# define cvt_symbol_1(lib, local, symbol, version) \ +# define cvt_symbol_1(lib, local, symbol, version) \ compat_symbol (lib, local, symbol, version) -# endif #else # define cvt_symbol(symbol) \ strong_alias (__APPEND (FUNC_PREFIX, symbol), APPEND (FUNC_PREFIX, symbol)) diff --git a/misc/efgcvt_r-template.c b/misc/efgcvt_r-template.c new file mode 100644 index 0000000000..1cd335afe7 --- /dev/null +++ b/misc/efgcvt_r-template.c @@ -0,0 +1,196 @@ +/* Compatibility functions for floating point formatting, reentrant versions. + Copyright (C) 1995-2019 Free Software Foundation, Inc. + 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 + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <ctype.h> +#include <math.h> +#include <stdlib.h> +#include <sys/param.h> +#include <math_ldbl_opt.h> + + +#define APPEND(a, b) APPEND2 (a, b) +#define APPEND2(a, b) a##b +#define __APPEND(a, b) __APPEND2 (a, b) +#define __APPEND2(a, b) __##a##b + +int +__APPEND (FUNC_PREFIX, fcvt_r) (FLOAT_TYPE value, int ndigit, int *decpt, + int *sign, char *buf, size_t len) +{ + ssize_t n; + ssize_t i; + int left; + + if (buf == NULL) + { + __set_errno (EINVAL); + return -1; + } + + left = 0; + if (isfinite (value)) + { + *sign = signbit (value) != 0; + if (*sign) + value = -value; + + if (ndigit < 0) + { + /* Rounding to the left of the decimal point. */ + while (ndigit < 0) + { + FLOAT_TYPE new_value = value * 0.1; + + if (new_value < 1.0) + { + ndigit = 0; + break; + } + + value = new_value; + ++left; + ++ndigit; + } + } + } + else + /* Value is Inf or NaN. */ + *sign = 0; + + n = __snprintf (buf, len, "%.*" FLOAT_FMT_FLAG "f", MIN (ndigit, NDIGIT_MAX), + value); + /* Check for a too small buffer. */ + if (n >= (ssize_t) len) + return -1; + + i = 0; + while (i < n && isdigit (buf[i])) + ++i; + *decpt = i; + + if (i == 0) + /* Value is Inf or NaN. */ + return 0; + + if (i < n) + { + do + ++i; + while (i < n && !isdigit (buf[i])); + + if (*decpt == 1 && buf[0] == '0' && value != 0.0) + { + /* We must not have leading zeroes. Strip them all out and + adjust *DECPT if necessary. */ + --*decpt; + while (i < n && buf[i] == '0') + { + --*decpt; + ++i; + } + } + + memmove (&buf[MAX (*decpt, 0)], &buf[i], n - i); + buf[n - (i - MAX (*decpt, 0))] = '\0'; + } + + if (left) + { + *decpt += left; + if ((ssize_t) --len > n) + { + while (left-- > 0 && n < (ssize_t) len) + buf[n++] = '0'; + buf[n] = '\0'; + } + } + + return 0; +} + +int +__APPEND (FUNC_PREFIX, ecvt_r) (FLOAT_TYPE value, int ndigit, int *decpt, + int *sign, char *buf, size_t len) +{ + int exponent = 0; + + if (isfinite (value) && value != 0.0) + { + /* Slow code that doesn't require -lm functions. */ + FLOAT_TYPE d; + FLOAT_TYPE f = 1.0; + if (value < 0.0) + d = -value; + else + d = value; + /* For denormalized numbers the d < 1.0 case below won't work, + as f can overflow to +Inf. */ + if (d < FLOAT_MIN_10_NORM) + { + value /= FLOAT_MIN_10_NORM; + if (value < 0.0) + d = -value; + else + d = value; + exponent += FLOAT_MIN_10_EXP; + } + if (d < 1.0) + { + do + { + f *= 10.0; + --exponent; + } + while (d * f < 1.0); + + value *= f; + } + else if (d >= 10.0) + { + do + { + f *= 10; + ++exponent; + } + while (d >= f * 10.0); + + value /= f; + } + } + else if (value == 0.0) + /* SUSv2 leaves it unspecified whether *DECPT is 0 or 1 for 0.0. + This could be changed to -1 if we want to return 0. */ + exponent = 0; + + if (ndigit <= 0 && len > 0) + { + buf[0] = '\0'; + *decpt = 1; + *sign = isfinite (value) ? signbit (value) != 0 : 0; + } + else + if (__APPEND (FUNC_PREFIX, fcvt_r) (value, MIN (ndigit, NDIGIT_MAX) - 1, + decpt, sign, buf, len)) + return -1; + + *decpt += exponent; + return 0; +} diff --git a/misc/efgcvt_r.c b/misc/efgcvt_r.c index 981249850c..ad78f153ba 100644 --- a/misc/efgcvt_r.c +++ b/misc/efgcvt_r.c @@ -1,4 +1,4 @@ -/* Compatibility functions for floating point formatting, reentrant versions. +/* Double versions of reentrant *cvt_r functions. Copyright (C) 1995-2019 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -16,241 +16,17 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#include <errno.h> -#include <float.h> -#include <stdio.h> -#include <string.h> -#include <ctype.h> -#include <math.h> -#include <stdlib.h> -#include <sys/param.h> -#include <math_ldbl_opt.h> - -#ifndef FLOAT_TYPE -# define FLOAT_TYPE double -# define FUNC_PREFIX -# define FLOAT_FMT_FLAG -# define FLOAT_NAME_EXT -# define FLOAT_MIN_10_EXP DBL_MIN_10_EXP -# if DBL_MANT_DIG == 53 -# define NDIGIT_MAX 17 -# elif DBL_MANT_DIG == 24 -# define NDIGIT_MAX 9 -# elif DBL_MANT_DIG == 56 -# define NDIGIT_MAX 18 -# else -/* See IEEE 854 5.6, table 2 for this formula. Unfortunately we need a - compile time constant here, so we cannot use it. */ -# error "NDIGIT_MAX must be precomputed" -# define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * DBL_MANT_DIG + 1.0))) -# endif -# if DBL_MIN_10_EXP == -37 -# define FLOAT_MIN_10_NORM 1.0e-37 -# elif DBL_MIN_10_EXP == -307 -# define FLOAT_MIN_10_NORM 1.0e-307 -# elif DBL_MIN_10_EXP == -4931 -# define FLOAT_MIN_10_NORM 1.0e-4931 -# else -/* libc can't depend on libm. */ -# error "FLOAT_MIN_10_NORM must be precomputed" -# define FLOAT_MIN_10_NORM exp10 (DBL_MIN_10_EXP) -# endif -#else -# define LONG_DOUBLE_CVT -#endif - -#define APPEND(a, b) APPEND2 (a, b) -#define APPEND2(a, b) a##b -#define __APPEND(a, b) __APPEND2 (a, b) -#define __APPEND2(a, b) __##a##b - -#define FLOOR APPEND(floor, FLOAT_NAME_EXT) -#define FABS APPEND(fabs, FLOAT_NAME_EXT) -#define LOG10 APPEND(log10, FLOAT_NAME_EXT) -#define EXP APPEND(exp, FLOAT_NAME_EXT) - - -int -__APPEND (FUNC_PREFIX, fcvt_r) (FLOAT_TYPE value, int ndigit, int *decpt, - int *sign, char *buf, size_t len) -{ - ssize_t n; - ssize_t i; - int left; - - if (buf == NULL) - { - __set_errno (EINVAL); - return -1; - } - - left = 0; - if (isfinite (value)) - { - *sign = signbit (value) != 0; - if (*sign) - value = -value; - - if (ndigit < 0) - { - /* Rounding to the left of the decimal point. */ - while (ndigit < 0) - { - FLOAT_TYPE new_value = value * 0.1; - - if (new_value < 1.0) - { - ndigit = 0; - break; - } - - value = new_value; - ++left; - ++ndigit; - } - } - } - else - /* Value is Inf or NaN. */ - *sign = 0; - - n = __snprintf (buf, len, "%.*" FLOAT_FMT_FLAG "f", MIN (ndigit, NDIGIT_MAX), - value); - /* Check for a too small buffer. */ - if (n >= (ssize_t) len) - return -1; - - i = 0; - while (i < n && isdigit (buf[i])) - ++i; - *decpt = i; - - if (i == 0) - /* Value is Inf or NaN. */ - return 0; - - if (i < n) - { - do - ++i; - while (i < n && !isdigit (buf[i])); - - if (*decpt == 1 && buf[0] == '0' && value != 0.0) - { - /* We must not have leading zeroes. Strip them all out and - adjust *DECPT if necessary. */ - --*decpt; - while (i < n && buf[i] == '0') - { - --*decpt; - ++i; - } - } - - memmove (&buf[MAX (*decpt, 0)], &buf[i], n - i); - buf[n - (i - MAX (*decpt, 0))] = '\0'; - } - - if (left) - { - *decpt += left; - if ((ssize_t) --len > n) - { - while (left-- > 0 && n < (ssize_t) len) - buf[n++] = '0'; - buf[n] = '\0'; - } - } - - return 0; -} - -int -__APPEND (FUNC_PREFIX, ecvt_r) (FLOAT_TYPE value, int ndigit, int *decpt, - int *sign, char *buf, size_t len) -{ - int exponent = 0; - - if (isfinite (value) && value != 0.0) - { - /* Slow code that doesn't require -lm functions. */ - FLOAT_TYPE d; - FLOAT_TYPE f = 1.0; - if (value < 0.0) - d = -value; - else - d = value; - /* For denormalized numbers the d < 1.0 case below won't work, - as f can overflow to +Inf. */ - if (d < FLOAT_MIN_10_NORM) - { - value /= FLOAT_MIN_10_NORM; - if (value < 0.0) - d = -value; - else - d = value; - exponent += FLOAT_MIN_10_EXP; - } - if (d < 1.0) - { - do - { - f *= 10.0; - --exponent; - } - while (d * f < 1.0); - - value *= f; - } - else if (d >= 10.0) - { - do - { - f *= 10; - ++exponent; - } - while (d >= f * 10.0); - - value /= f; - } - } - else if (value == 0.0) - /* SUSv2 leaves it unspecified whether *DECPT is 0 or 1 for 0.0. - This could be changed to -1 if we want to return 0. */ - exponent = 0; - - if (ndigit <= 0 && len > 0) - { - buf[0] = '\0'; - *decpt = 1; - *sign = isfinite (value) ? signbit (value) != 0 : 0; - } - else - if (__APPEND (FUNC_PREFIX, fcvt_r) (value, MIN (ndigit, NDIGIT_MAX) - 1, - decpt, sign, buf, len)) - return -1; - - *decpt += exponent; - return 0; -} +#include <efgcvt-dbl-macros.h> +#include <efgcvt_r-template.c> #if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0) -# ifdef LONG_DOUBLE_CVT -# define cvt_symbol(symbol) \ - cvt_symbol_1 (libc, __APPEND (FUNC_PREFIX, symbol), \ - APPEND (FUNC_PREFIX, symbol), GLIBC_2_4) -# define cvt_symbol_1(lib, local, symbol, version) \ - libc_hidden_def (local) \ - versioned_symbol (lib, local, symbol, version) -# else -# define cvt_symbol(symbol) \ +# define cvt_symbol(symbol) \ cvt_symbol_1 (libc, __APPEND (FUNC_PREFIX, symbol), \ APPEND (q, symbol), GLIBC_2_0); \ weak_alias (__APPEND (FUNC_PREFIX, symbol), APPEND (FUNC_PREFIX, symbol)) -# define cvt_symbol_1(lib, local, symbol, version) \ +# define cvt_symbol_1(lib, local, symbol, version) \ libc_hidden_def (local) \ compat_symbol (lib, local, symbol, version) -# endif #else # define cvt_symbol(symbol) \ cvt_symbol_1 (__APPEND (FUNC_PREFIX, symbol), APPEND (FUNC_PREFIX, symbol)) diff --git a/misc/qefgcvt.c b/misc/qefgcvt.c index 4fcadfcdc2..8f1582a50e 100644 --- a/misc/qefgcvt.c +++ b/misc/qefgcvt.c @@ -16,31 +16,19 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#include <float.h> +#include <efgcvt-ldbl-macros.h> +#include <efgcvt-template.c> -#define FLOAT_TYPE long double -#define FUNC_PREFIX q -#define FLOAT_FMT_FLAG "L" -/* Actually we have to write (LDBL_DIG + log10 (LDBL_MAX_10_EXP)) but - we don't have log10 available in the preprocessor. Since we cannot - assume anything on the used `long double' format be generous. */ -#define MAXDIG (NDIGIT_MAX + 12) -#define FCVT_MAXDIG (LDBL_MAX_10_EXP + MAXDIG) -#if LDBL_MANT_DIG == 64 -# define NDIGIT_MAX 21 -#elif LDBL_MANT_DIG == 53 -# define NDIGIT_MAX 17 -#elif LDBL_MANT_DIG == 113 -# define NDIGIT_MAX 36 -#elif LDBL_MANT_DIG == 106 -# define NDIGIT_MAX 34 -#elif LDBL_MANT_DIG == 56 -# define NDIGIT_MAX 18 +#if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0) +# define cvt_symbol(symbol) \ + cvt_symbol_1 (libc, __APPEND (FUNC_PREFIX, symbol), \ + APPEND (FUNC_PREFIX, symbol), GLIBC_2_4) +# define cvt_symbol_1(lib, local, symbol, version) \ + versioned_symbol (lib, local, symbol, version) #else -/* See IEEE 854 5.6, table 2 for this formula. Unfortunately we need a - compile time constant here, so we cannot use it. */ -# error "NDIGIT_MAX must be precomputed" -# define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * LDBL_MANT_DIG + 1.0))) +# define cvt_symbol(symbol) \ + strong_alias (__APPEND (FUNC_PREFIX, symbol), APPEND (FUNC_PREFIX, symbol)) #endif - -#include "efgcvt.c" +cvt_symbol(fcvt); +cvt_symbol(ecvt); +cvt_symbol(gcvt); diff --git a/misc/qefgcvt_r.c b/misc/qefgcvt_r.c index 8f4d8b9f7a..4240f1da2b 100644 --- a/misc/qefgcvt_r.c +++ b/misc/qefgcvt_r.c @@ -17,41 +17,22 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#include <float.h> +#include <efgcvt-ldbl-macros.h> +#include <efgcvt_r-template.c> -#define FLOAT_TYPE long double -#define FUNC_PREFIX q -#define FLOAT_FMT_FLAG "L" -#define FLOAT_NAME_EXT l -#define FLOAT_MIN_10_EXP LDBL_MIN_10_EXP -#if LDBL_MANT_DIG == 64 -# define NDIGIT_MAX 21 -#elif LDBL_MANT_DIG == 53 -# define NDIGIT_MAX 17 -#elif LDBL_MANT_DIG == 113 -# define NDIGIT_MAX 36 -#elif LDBL_MANT_DIG == 106 -# define NDIGIT_MAX 34 -#elif LDBL_MANT_DIG == 56 -# define NDIGIT_MAX 18 +#if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0) +# define cvt_symbol(symbol) \ + cvt_symbol_1 (libc, __APPEND (FUNC_PREFIX, symbol), \ + APPEND (FUNC_PREFIX, symbol), GLIBC_2_4) +# define cvt_symbol_1(lib, local, symbol, version) \ + libc_hidden_def (local) \ + versioned_symbol (lib, local, symbol, version) #else -/* See IEEE 854 5.6, table 2 for this formula. Unfortunately we need a - compile time constant here, so we cannot use it. */ -# error "NDIGIT_MAX must be precomputed" -# define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * LDBL_MANT_DIG + 1.0))) +# define cvt_symbol(symbol) \ + cvt_symbol_1 (__APPEND (FUNC_PREFIX, symbol), APPEND (FUNC_PREFIX, symbol)) +# define cvt_symbol_1(local, symbol) \ + libc_hidden_def (local) \ + weak_alias (local, symbol) #endif -#if LDBL_MIN_10_EXP == -37 -# define FLOAT_MIN_10_NORM 1.0e-37L -#elif LDBL_MIN_10_EXP == -291 -# define FLOAT_MIN_10_NORM 1.0e-291L -#elif LDBL_MIN_10_EXP == -307 -# define FLOAT_MIN_10_NORM 1.0e-307L -#elif LDBL_MIN_10_EXP == -4931 -# define FLOAT_MIN_10_NORM 1.0e-4931L -#else -/* libc can't depend on libm. */ -# error "FLOAT_MIN_10_NORM must be precomputed" -# define FLOAT_MIN_10_NORM exp10l (LDBL_MIN_10_EXP) -#endif - -#include "efgcvt_r.c" +cvt_symbol(fcvt_r); +cvt_symbol(ecvt_r); |