111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
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/* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF */
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/* UNIX System Laboratories, Inc. */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)ksh:include/streval.h 1.1.4.1"
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/*
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* G. S. Fowler
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* D. G. Korn
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* AT&T Bell Laboratories
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*
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* long integer arithmetic expression evaluator
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*/
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/* The following only is needed for const */
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#include "sh_config.h"
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struct lval
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{
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char *value;
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int flag;
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};
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#ifdef FLOAT
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typedef double number;
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#else
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typedef long long number;
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#endif /* FLOAT */
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#define MAXPREC 15 /* maximum precision level */
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#define SEQPOINT 0200 /* sequence point */
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#define NOASSIGN 0100 /* assignment legal with this operator */
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#define RASSOC 040 /* right associative */
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#define NOFLOAT 020 /* illegal with floating point */
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#define PRECMASK 017 /* precision bit mask */
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#define DEFAULT 0
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#define LPAREN 1
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#define RPAREN 2
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#define COMMA 3
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#define ASSIGNMENT 4
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#define MOD 5
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#define LSHIFT 6
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#define RSHIFT 7
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#define PLUS 8
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#define MINUS 9
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#define DIVIDE 10
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#define EQ 11
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#define NEQ 12
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#define LT 13
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#define GT 14
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#define LE 15
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#define GE 16
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#define AND 17
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#define OR 18
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#define XOR 19
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#define ANDAND 20
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#define OROR 21
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#define DONE 22
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#define NOT 23
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#define QUEST 24
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#define QCOLON 25
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#define TIMES 26
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#define ARROW 27
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#define DOT 28
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#define LBRACKET 29
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#define RBRACKET 30
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#define PLUSPLUS 31
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#define MINUSMINUS 32
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#define COLON 33
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struct Optable
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{
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unsigned char opcode;
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unsigned char precedence;
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char name[2];
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};
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/* define error messages */
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extern const char e_moretokens[];
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extern const char e_paren[];
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extern const char e_number[];
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extern const char e_badcolon[];
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extern const char e_recursive[];
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extern const char e_divzero[];
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extern const char e_synbad[];
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extern const char e_notlvalue[];
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#ifdef FLOAT
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extern const char e_incompatible[];
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#endif /* FLOAT */
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/* function code for the convert function */
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#define LOOKUP 0
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#define ASSIGN 1
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#define VALUE 2
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#define ERRMSG 3
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#ifdef PROTO
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extern number streval(char*,char**,number(*)());
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#else
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extern number streval();
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#endif /* PROTO */
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