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Diffstat (limited to 'gl/float+.h')
| -rw-r--r-- | gl/float+.h | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/gl/float+.h b/gl/float+.h deleted file mode 100644 index 49a9dfc0f6..0000000000 --- a/gl/float+.h +++ /dev/null @@ -1,147 +0,0 @@ -/* Supplemental information about the floating-point formats. - Copyright (C) 2007, 2009-2016 Free Software Foundation, Inc. - Written by Bruno Haible <bruno@clisp.org>, 2007. - - This program 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, or (at your option) - any later version. - - This program 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 this program; if not, see <http://www.gnu.org/licenses/>. */ - -#ifndef _FLOATPLUS_H -#define _FLOATPLUS_H - -#include <float.h> -#include <limits.h> - -/* Number of bits in the mantissa of a floating-point number, including the - "hidden bit". */ -#if FLT_RADIX == 2 -# define FLT_MANT_BIT FLT_MANT_DIG -# define DBL_MANT_BIT DBL_MANT_DIG -# define LDBL_MANT_BIT LDBL_MANT_DIG -#elif FLT_RADIX == 4 -# define FLT_MANT_BIT (FLT_MANT_DIG * 2) -# define DBL_MANT_BIT (DBL_MANT_DIG * 2) -# define LDBL_MANT_BIT (LDBL_MANT_DIG * 2) -#elif FLT_RADIX == 16 -# define FLT_MANT_BIT (FLT_MANT_DIG * 4) -# define DBL_MANT_BIT (DBL_MANT_DIG * 4) -# define LDBL_MANT_BIT (LDBL_MANT_DIG * 4) -#endif - -/* Bit mask that can be used to mask the exponent, as an unsigned number. */ -#define FLT_EXP_MASK ((FLT_MAX_EXP - FLT_MIN_EXP) | 7) -#define DBL_EXP_MASK ((DBL_MAX_EXP - DBL_MIN_EXP) | 7) -#define LDBL_EXP_MASK ((LDBL_MAX_EXP - LDBL_MIN_EXP) | 7) - -/* Number of bits used for the exponent of a floating-point number, including - the exponent's sign. */ -#define FLT_EXP_BIT \ - (FLT_EXP_MASK < 0x100 ? 8 : \ - FLT_EXP_MASK < 0x200 ? 9 : \ - FLT_EXP_MASK < 0x400 ? 10 : \ - FLT_EXP_MASK < 0x800 ? 11 : \ - FLT_EXP_MASK < 0x1000 ? 12 : \ - FLT_EXP_MASK < 0x2000 ? 13 : \ - FLT_EXP_MASK < 0x4000 ? 14 : \ - FLT_EXP_MASK < 0x8000 ? 15 : \ - FLT_EXP_MASK < 0x10000 ? 16 : \ - FLT_EXP_MASK < 0x20000 ? 17 : \ - FLT_EXP_MASK < 0x40000 ? 18 : \ - FLT_EXP_MASK < 0x80000 ? 19 : \ - FLT_EXP_MASK < 0x100000 ? 20 : \ - FLT_EXP_MASK < 0x200000 ? 21 : \ - FLT_EXP_MASK < 0x400000 ? 22 : \ - FLT_EXP_MASK < 0x800000 ? 23 : \ - FLT_EXP_MASK < 0x1000000 ? 24 : \ - FLT_EXP_MASK < 0x2000000 ? 25 : \ - FLT_EXP_MASK < 0x4000000 ? 26 : \ - FLT_EXP_MASK < 0x8000000 ? 27 : \ - FLT_EXP_MASK < 0x10000000 ? 28 : \ - FLT_EXP_MASK < 0x20000000 ? 29 : \ - FLT_EXP_MASK < 0x40000000 ? 30 : \ - FLT_EXP_MASK <= 0x7fffffff ? 31 : \ - 32) -#define DBL_EXP_BIT \ - (DBL_EXP_MASK < 0x100 ? 8 : \ - DBL_EXP_MASK < 0x200 ? 9 : \ - DBL_EXP_MASK < 0x400 ? 10 : \ - DBL_EXP_MASK < 0x800 ? 11 : \ - DBL_EXP_MASK < 0x1000 ? 12 : \ - DBL_EXP_MASK < 0x2000 ? 13 : \ - DBL_EXP_MASK < 0x4000 ? 14 : \ - DBL_EXP_MASK < 0x8000 ? 15 : \ - DBL_EXP_MASK < 0x10000 ? 16 : \ - DBL_EXP_MASK < 0x20000 ? 17 : \ - DBL_EXP_MASK < 0x40000 ? 18 : \ - DBL_EXP_MASK < 0x80000 ? 19 : \ - DBL_EXP_MASK < 0x100000 ? 20 : \ - DBL_EXP_MASK < 0x200000 ? 21 : \ - DBL_EXP_MASK < 0x400000 ? 22 : \ - DBL_EXP_MASK < 0x800000 ? 23 : \ - DBL_EXP_MASK < 0x1000000 ? 24 : \ - DBL_EXP_MASK < 0x2000000 ? 25 : \ - DBL_EXP_MASK < 0x4000000 ? 26 : \ - DBL_EXP_MASK < 0x8000000 ? 27 : \ - DBL_EXP_MASK < 0x10000000 ? 28 : \ - DBL_EXP_MASK < 0x20000000 ? 29 : \ - DBL_EXP_MASK < 0x40000000 ? 30 : \ - DBL_EXP_MASK <= 0x7fffffff ? 31 : \ - 32) -#define LDBL_EXP_BIT \ - (LDBL_EXP_MASK < 0x100 ? 8 : \ - LDBL_EXP_MASK < 0x200 ? 9 : \ - LDBL_EXP_MASK < 0x400 ? 10 : \ - LDBL_EXP_MASK < 0x800 ? 11 : \ - LDBL_EXP_MASK < 0x1000 ? 12 : \ - LDBL_EXP_MASK < 0x2000 ? 13 : \ - LDBL_EXP_MASK < 0x4000 ? 14 : \ - LDBL_EXP_MASK < 0x8000 ? 15 : \ - LDBL_EXP_MASK < 0x10000 ? 16 : \ - LDBL_EXP_MASK < 0x20000 ? 17 : \ - LDBL_EXP_MASK < 0x40000 ? 18 : \ - LDBL_EXP_MASK < 0x80000 ? 19 : \ - LDBL_EXP_MASK < 0x100000 ? 20 : \ - LDBL_EXP_MASK < 0x200000 ? 21 : \ - LDBL_EXP_MASK < 0x400000 ? 22 : \ - LDBL_EXP_MASK < 0x800000 ? 23 : \ - LDBL_EXP_MASK < 0x1000000 ? 24 : \ - LDBL_EXP_MASK < 0x2000000 ? 25 : \ - LDBL_EXP_MASK < 0x4000000 ? 26 : \ - LDBL_EXP_MASK < 0x8000000 ? 27 : \ - LDBL_EXP_MASK < 0x10000000 ? 28 : \ - LDBL_EXP_MASK < 0x20000000 ? 29 : \ - LDBL_EXP_MASK < 0x40000000 ? 30 : \ - LDBL_EXP_MASK <= 0x7fffffff ? 31 : \ - 32) - -/* Number of bits used for a floating-point number: the mantissa (not - counting the "hidden bit", since it may or may not be explicit), the - exponent, and the sign. */ -#define FLT_TOTAL_BIT ((FLT_MANT_BIT - 1) + FLT_EXP_BIT + 1) -#define DBL_TOTAL_BIT ((DBL_MANT_BIT - 1) + DBL_EXP_BIT + 1) -#define LDBL_TOTAL_BIT ((LDBL_MANT_BIT - 1) + LDBL_EXP_BIT + 1) - -/* Number of bytes used for a floating-point number. - This can be smaller than the 'sizeof'. For example, on i386 systems, - 'long double' most often have LDBL_MANT_BIT = 64, LDBL_EXP_BIT = 16, hence - LDBL_TOTAL_BIT = 80 bits, i.e. 10 bytes of consecutive memory, but - sizeof (long double) = 12 or = 16. */ -#define SIZEOF_FLT ((FLT_TOTAL_BIT + CHAR_BIT - 1) / CHAR_BIT) -#define SIZEOF_DBL ((DBL_TOTAL_BIT + CHAR_BIT - 1) / CHAR_BIT) -#define SIZEOF_LDBL ((LDBL_TOTAL_BIT + CHAR_BIT - 1) / CHAR_BIT) - -/* Verify that SIZEOF_FLT <= sizeof (float) etc. */ -typedef int verify_sizeof_flt[SIZEOF_FLT <= sizeof (float) ? 1 : -1]; -typedef int verify_sizeof_dbl[SIZEOF_DBL <= sizeof (double) ? 1 : - 1]; -typedef int verify_sizeof_ldbl[SIZEOF_LDBL <= sizeof (long double) ? 1 : - 1]; - -#endif /* _FLOATPLUS_H */ |