95639a80ef
Inputting fractional non-decimal numbers has never worked correctly in our OpenBSD-derived dc(1). It truncates the input to a number of decimal places equal to the number of hexadecimal (or whatever base) places given on the input. That's unacceptable, because many numbers require more precision to represent in base 10 than in their original bases. Fix this bug by using as many decimal places as needed to represent the input, up to the maximum of the global scale factor. This has one mildly surprising side effect: the scale of a number entered in non-decimal mode will no longer necessarily equal the number of hexadecimal (or whatever base) places given on the input. I think that's an acceptable behavior change, given that inputting fractional non-decimal numbers never worked in the first place, and the man page doesn't specify whether trailing zeros on the input should affect a number's scale. PR: 206230 Reported by: nibbana@gmx.us Reviewed by: pfg Differential Revision: https://reviews.freebsd.org/D13336
65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
/* $FreeBSD$ */
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/* $OpenBSD: extern.h,v 1.4 2014/12/01 13:13:00 deraadt Exp $ */
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/*
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* Copyright (c) 2003, Otto Moerbeek <otto@drijf.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <stdbool.h>
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#include "bcode.h"
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/* inout.c */
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void src_setstream(struct source *, FILE *);
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void src_setstring(struct source *, char *);
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struct number *readnumber(struct source *, u_int, u_int);
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void printnumber(FILE *, const struct number *, u_int);
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char *read_string(struct source *);
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void print_value(FILE *, const struct value *, const char *, u_int);
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void print_ascii(FILE *, const struct number *);
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/* mem.c */
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struct number *new_number(void);
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void free_number(struct number *);
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struct number *div_number(struct number *, struct number *, u_int scale);
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struct number *dup_number(const struct number *);
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void *bmalloc(size_t);
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void *breallocarray(void *, size_t, size_t);
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char *bstrdup(const char *p);
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void bn_check(int);
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void bn_checkp(const void *);
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/* stack.c */
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void stack_init(struct stack *);
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void stack_free_value(struct value *);
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struct value *stack_dup_value(const struct value *, struct value *);
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void stack_swap(struct stack *);
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size_t stack_size(const struct stack *);
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void stack_dup(struct stack *);
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void stack_pushnumber(struct stack *, struct number *);
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void stack_pushstring(struct stack *stack, char *);
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void stack_push(struct stack *, struct value *);
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void stack_set_tos(struct stack *, struct value *);
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struct value *stack_tos(const struct stack *);
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struct value *stack_pop(struct stack *);
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struct number *stack_popnumber(struct stack *);
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char *stack_popstring(struct stack *);
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void stack_clear(struct stack *);
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void stack_print(FILE *, const struct stack *, const char *,
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u_int base);
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void frame_assign(struct stack *, size_t, const struct value *);
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struct value *frame_retrieve(const struct stack *, size_t);
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/* void frame_free(struct stack *); */
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