/* flonum.h - Floating point package
- Copyright (C) 1987, 1990, 1991 Free Software Foundation, Inc.
+ Copyright (C) 1987-2020 Free Software Foundation, Inc.
-This file is part of GAS, the GNU Assembler.
+ 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 1, or (at your option)
-any later version.
+ 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 3, 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.
+ 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-/* $Id$ */
+ 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, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, 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! *
-* *
-\***********************************************************************/
-#if !defined(__STDC__) && !defined(const)
-#define const /* empty */
-#endif
+ * *
+ * 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. *
-* *
-\***********************************************************************/
+ * *
+ * 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 '-' */
+ */
+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). *
-* *
-\***********************************************************************/
-
+ * *
+ * 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. */
-
-
+/* Flonum_XXX_powers_of_ten[] table has legal indices from 0 to
+ + this number inclusive. */
/***********************************************************************\
-* *
-* Declare worker functions. *
-* *
-\***********************************************************************/
+ * *
+ * Declare worker functions. *
+ * *
+ \***********************************************************************/
-#ifdef __STDC__
+int atof_generic (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);
-int atof_generic(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(FLONUM_TYPE *in, FLONUM_TYPE *out);
-void flonum_multip(const FLONUM_TYPE *a, const FLONUM_TYPE *b, FLONUM_TYPE *product);
-
-#else /* __STDC__ */
-
-int atof_generic();
-void flonum_copy();
-void flonum_multip();
-
-#endif /* __STDC__ */
+void flonum_copy (FLONUM_TYPE * in, FLONUM_TYPE * out);
+void flonum_multip (const FLONUM_TYPE * a, const FLONUM_TYPE * b,
+ FLONUM_TYPE * product);
/***********************************************************************\
-* *
-* Declare error codes. *
-* *
-\***********************************************************************/
+ * *
+ * Declare error codes. *
+ * *
+ \***********************************************************************/
#define ERROR_EXPONENT_OVERFLOW (2)
-
-/* end: flonum.h */
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