diff options
Diffstat (limited to 'gas/flonum.h')
| -rw-r--r-- | gas/flonum.h | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/gas/flonum.h b/gas/flonum.h deleted file mode 100644 index 6684f496c2c..00000000000 --- a/gas/flonum.h +++ /dev/null @@ -1,110 +0,0 @@ -/* flonum.h - Floating point package - - Copyright (C) 1987, 90, 91, 92, 94, 95, 1996 Free Software Foundation, Inc. - - This file is part of GAS, the GNU Assembler. - - GAS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - GAS 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GAS; see the file COPYING. If not, write to the Free - Software Foundation, 59 Temple Place - Suite 330, Boston, MA - 02111-1307, USA. */ - -/***********************************************************************\ - * * - * Arbitrary-precision floating point arithmetic. * - * * - * * - * Notation: a floating point number is expressed as * - * MANTISSA * (2 ** EXPONENT). * - * * - * If this offends more traditional mathematicians, then * - * please tell me your nomenclature for flonums! * - * * - \***********************************************************************/ - -#include "bignum.h" - -/***********************************************************************\ - * * - * Variable precision floating point numbers. * - * * - * Exponent is the place value of the low littlenum. E.g.: * - * If 0: low points to the units littlenum. * - * If 1: low points to the LITTLENUM_RADIX littlenum. * - * If -1: low points to the 1/LITTLENUM_RADIX littlenum. * - * * - \***********************************************************************/ - -/* JF: A sign value of 0 means we have been asked to assemble NaN - A sign value of 'P' means we've been asked to assemble +Inf - A sign value of 'N' means we've been asked to assemble -Inf - */ -struct FLONUM_STRUCT -{ - LITTLENUM_TYPE *low; /* low order littlenum of a bignum */ - LITTLENUM_TYPE *high; /* high order littlenum of a bignum */ - LITTLENUM_TYPE *leader; /* -> 1st non-zero littlenum */ - /* If flonum is 0.0, leader==low-1 */ - long exponent; /* base LITTLENUM_RADIX */ - char sign; /* '+' or '-' */ -}; - -typedef struct FLONUM_STRUCT FLONUM_TYPE; - - -/***********************************************************************\ - * * - * Since we can (& do) meet with exponents like 10^5000, it * - * is silly to make a table of ~ 10,000 entries, one for each * - * power of 10. We keep a table where item [n] is a struct * - * FLONUM_FLOATING_POINT representing 10^(2^n). We then * - * multiply appropriate entries from this table to get any * - * particular power of 10. For the example of 10^5000, a table * - * of just 25 entries suffices: 10^(2^-12)...10^(2^+12). * - * * - \***********************************************************************/ - - -extern const FLONUM_TYPE flonum_positive_powers_of_ten[]; -extern const FLONUM_TYPE flonum_negative_powers_of_ten[]; -extern const int table_size_of_flonum_powers_of_ten; -/* Flonum_XXX_powers_of_ten[] table has */ -/* legal indices from 0 to */ -/* + this number inclusive. */ - - - -/***********************************************************************\ - * * - * Declare worker functions. * - * * - \***********************************************************************/ - -int atof_generic PARAMS ((char **address_of_string_pointer, - const char *string_of_decimal_marks, - const char *string_of_decimal_exponent_marks, - FLONUM_TYPE * address_of_generic_floating_point_number)); - -void flonum_copy PARAMS ((FLONUM_TYPE * in, FLONUM_TYPE * out)); -void flonum_multip PARAMS ((const FLONUM_TYPE * a, const FLONUM_TYPE * b, - FLONUM_TYPE * product)); - -/***********************************************************************\ - * * - * Declare error codes. * - * * - \***********************************************************************/ - -#define ERROR_EXPONENT_OVERFLOW (2) - -/* end of flonum.h */ |