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v0.5.1
v0.5.1
https://github.com/python/cpython
Revision 1d120619d475b1b892585b812dc0d28bd389d097 authored by Tim Peters on 12 October 2000, 06:10:25 UTC, committed by Tim Peters on 12 October 2000, 06:10:25 UTC
libm result is 0). Cautiously add a few libm exception test cases: 1. That exp(-huge) returns 0 without exception. 2. That exp(+huge) triggers OverflowError. 3. That sqrt(-1) raises ValueError specifically (apparently under glibc linked with -lieee, it was raising OverflowError due to an accident of the way mathmodule.c's CHECK() macro happened to deal with Infs and NaNs under gcc).
1 parent ec1722e
Tip revision: 1d120619d475b1b892585b812dc0d28bd389d097 authored by Tim Peters on 12 October 2000, 06:10:25 UTC
Stop raising OverflowError on underflows reported by libm (errno==ERANGE and
Stop raising OverflowError on underflows reported by libm (errno==ERANGE and
Tip revision: 1d12061
grammar.h
/* Grammar interface */
#ifndef Py_GRAMMAR_H
#define Py_GRAMMAR_H
#ifdef __cplusplus
extern "C" {
#endif
#include "bitset.h" /* Sigh... */
/* A label of an arc */
typedef struct {
int lb_type;
char *lb_str;
} label;
#define EMPTY 0 /* Label number 0 is by definition the empty label */
/* A list of labels */
typedef struct {
int ll_nlabels;
label *ll_label;
} labellist;
/* An arc from one state to another */
typedef struct {
short a_lbl; /* Label of this arc */
short a_arrow; /* State where this arc goes to */
} arc;
/* A state in a DFA */
typedef struct {
int s_narcs;
arc *s_arc; /* Array of arcs */
/* Optional accelerators */
int s_lower; /* Lowest label index */
int s_upper; /* Highest label index */
int *s_accel; /* Accelerator */
int s_accept; /* Nonzero for accepting state */
} state;
/* A DFA */
typedef struct {
int d_type; /* Non-terminal this represents */
char *d_name; /* For printing */
int d_initial; /* Initial state */
int d_nstates;
state *d_state; /* Array of states */
bitset d_first;
} dfa;
/* A grammar */
typedef struct {
int g_ndfas;
dfa *g_dfa; /* Array of DFAs */
labellist g_ll;
int g_start; /* Start symbol of the grammar */
int g_accel; /* Set if accelerators present */
} grammar;
/* FUNCTIONS */
grammar *newgrammar(int start);
dfa *adddfa(grammar *g, int type, char *name);
int addstate(dfa *d);
void addarc(dfa *d, int from, int to, int lbl);
dfa *PyGrammar_FindDFA(grammar *g, int type);
int addlabel(labellist *ll, int type, char *str);
int findlabel(labellist *ll, int type, char *str);
char *PyGrammar_LabelRepr(label *lb);
void translatelabels(grammar *g);
void addfirstsets(grammar *g);
void PyGrammar_AddAccelerators(grammar *g);
void PyGrammar_RemoveAccelerators(grammar *);
void printgrammar(grammar *g, FILE *fp);
void printnonterminals(grammar *g, FILE *fp);
#ifdef __cplusplus
}
#endif
#endif /* !Py_GRAMMAR_H */
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