/usr/include/s9core.h is in scheme9 2015.11.19-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* S9 Core Toolkit
* By Nils M Holm, 2007-2015
* In the public domain
*/
#ifndef _POSIX_SOURCE
#define _POSIX_SOURCE
#endif
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE
#endif
#ifndef _XOPEN_SOURCE_EXTENDED
#define _XOPEN_SOURCE_EXTENDED
#endif
#ifndef _DEFAULT_SOURCE
#define _DEFAULT_SOURCE
#endif
#ifndef MAXPATHLEN
/* MAXPATHLEN not defined on Hurd, as it is "bogus." */
#define MAXPATHLEN 4096
#endif
/*
* Ugly prelude to figure out if
* we are compiling on a Un*x system.
*/
#ifdef __NetBSD__
#ifndef unix
#define unix
#endif
#endif
#ifdef __unix
#ifndef unix
#define unix
#endif
#endif
#ifdef __linux
#ifndef unix
#define unix
#endif
#endif
#ifdef __GNUC__
#ifndef unix
#define unix
#endif
#endif
#ifdef __clang__
#ifndef unix
#define unix
#endif
#endif
#ifndef unix
#ifndef plan9
#error "Either 'unix' or 'plan9' must be #defined."
#endif
#endif
/*
* Tell later MSC compilers to let us use the standard CLIB API.
* Blake McBride < b l a k e @ m c b r i d e . n a m e >
*/
#ifdef _MSC_VER
#if _MSC_VER > 1200
#ifndef _CRT_SECURE_NO_DEPRECATE
#define _CRT_SECURE_NO_DEPRECATE
#endif
#endif
#ifndef _POSIX_
#define _POSIX_
#endif
#endif
#ifdef plan9
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include <ctype.h>
#define bye(x) exits((x)? "error": NULL)
#define ptrdiff_t int
#endif
#ifdef unix
#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#define bye(x) exit((x)? EXIT_FAILURE: EXIT_SUCCESS);
#endif
/* A "cell" must be large enough to hold a pointer */
#define cell ptrdiff_t
/* Default memory limit in K-nodes, 0 = none */
#define NODE_LIMIT 14013
#define VECTOR_LIMIT 14013
/* Pick one ... */
/* #define BITS_PER_WORD_64 */
/* #define BITS_PER_WORD_32 */
/* #define BITS_PER_WORD_16 */
/* ... or try some magic constants (unreliable, though) ... */
#ifdef __amd64__
#define BITS_PER_WORD_64
#endif
#ifdef __amd64
#define BITS_PER_WORD_64
#endif
#ifdef __x86_64__
#define BITS_PER_WORD_64
#endif
#ifdef __x86_64
#define BITS_PER_WORD_64
#endif
/* ... or assume a reasonable default */
#ifndef BITS_PER_WORD_16
#ifndef BITS_PER_WORD_32
#ifndef BITS_PER_WORD_64
#define BITS_PER_WORD_32
#endif
#endif
#endif
/*
* Node tags
*/
#define ATOM_TAG 0x01 /* Atom, Car = type, CDR = next */
#define MARK_TAG 0x02 /* Mark */
#define STATE_TAG 0x04 /* State */
#define VECTOR_TAG 0x08 /* Vector, Car = type, CDR = content */
#define PORT_TAG 0x10 /* Atom is an I/O port (with ATOM_TAG) */
#define USED_TAG 0x20 /* Port: used flag */
#define LOCK_TAG 0x40 /* Port: locked (do not close) */
#define CONST_TAG 0x80 /* Node is immutable */
/*
* Integer segment specs
*/
#ifdef BITS_PER_WORD_64
#define DIGITS_PER_CELL 18
#define INT_SEG_LIMIT 1000000000000000000L
#define MANTISSA_SEGMENTS 1
#else
#ifdef BITS_PER_WORD_32
#define DIGITS_PER_CELL 9
#define INT_SEG_LIMIT 1000000000L
#define MANTISSA_SEGMENTS 2
#else
#ifdef BITS_PER_WORD_16
#define DIGITS_PER_CELL 4
#define INT_SEG_LIMIT 10000
#define MANTISSA_SEGMENTS 2
#else
#error "BITS_PER_WORD_* undefined (this should not happen)"
#endif
#endif
#endif
/*
* Real number mantissa size
*/
#define MANTISSA_SIZE (MANTISSA_SEGMENTS * DIGITS_PER_CELL)
/*
* Special objects
*/
#define special_value_p(x) ((x) < 0)
#define NIL (-1)
#define TRUE (-2)
#define FALSE (-3)
#define END_OF_FILE (-4)
#define UNDEFINED (-5)
#define UNSPECIFIC (-6)
#define NOEXPR (-7)
/*
* Types
*/
#define T_ANY (-10)
#define T_BOOLEAN (-11)
#define T_CHAR (-12)
#define T_INPUT_PORT (-13)
#define T_INTEGER (-14)
#define T_LIST (-17)
#define T_OUTPUT_PORT (-15)
#define T_PAIR (-16)
#define T_PRIMITIVE (-18)
#define T_FUNCTION (-19)
#define T_REAL (-20)
#define T_STRING (-21)
#define T_SYMBOL (-22)
#define T_SYNTAX (-23)
#define T_VECTOR (-24)
#define T_CONTINUATION (-25)
#define USER_SPECIALS (-100)
/*
* Short cuts for primitive procedure definitions
* Yes, ___ violates the C standard, but it's too tempting
*/
#ifdef S9FES
#define BOL T_BOOLEAN
#define CHR T_CHAR
#define INP T_INPUT_PORT
#define INT T_INTEGER
#define LST T_LIST
#define OUP T_OUTPUT_PORT
#define PAI T_PAIR
#define FUN T_FUNCTION
#define REA T_REAL
#define STR T_STRING
#define SYM T_SYMBOL
#define VEC T_VECTOR
#define ___ T_ANY
#endif
/*
* Globals
*/
struct Counter {
int n, n1k, n1m, n1g, n1t;
};
#define counter struct Counter
struct Primitive_function {
char *name;
cell (*handler)(cell expr);
int min_args;
int max_args; /* -1 = variadic */
int arg_types[3];
};
#define PRIM struct Primitive_function
/*
* I/O
*/
#define nl() prints("\n")
/*
* Access to fields of atoms
*/
#define string(n) ((char *) &Vectors[Cdr[n]])
#define string_len(n) (Vectors[Cdr[n] - 1])
#define symbol_name(n) (string(n))
#define symbol_len(n) (string_len(n))
#define vector(n) (&Vectors[Cdr[n]])
#define vector_link(n) (Vectors[Cdr[n] - 3])
#define vector_index(n) (Vectors[Cdr[n] - 2])
#define vector_size(k) (((k) + sizeof(cell)-1) / sizeof(cell) + 3)
#define vector_len(n) (vector_size(string_len(n)) - 3)
#define port_no(n) (cadr(n))
#define char_value(n) (cadr(n))
#define prim_slot(n) (cadr(n))
#define prim_info(n) (&Primitives[prim_slot(n)])
/*
* Nested lists
*/
#define car(x) (Car[x])
#define cdr(x) (Cdr[x])
#define caar(x) (Car[Car[x]])
#define cadr(x) (Car[Cdr[x]])
#define cdar(x) (Cdr[Car[x]])
#define cddr(x) (Cdr[Cdr[x]])
#define caaar(x) (Car[Car[Car[x]]])
#define caadr(x) (Car[Car[Cdr[x]]])
#define cadar(x) (Car[Cdr[Car[x]]])
#define caddr(x) (Car[Cdr[Cdr[x]]])
#define cdaar(x) (Cdr[Car[Car[x]]])
#define cdadr(x) (Cdr[Car[Cdr[x]]])
#define cddar(x) (Cdr[Cdr[Car[x]]])
#define cdddr(x) (Cdr[Cdr[Cdr[x]]])
#define caaaar(x) (Car[Car[Car[Car[x]]]])
#define caaadr(x) (Car[Car[Car[Cdr[x]]]])
#define caadar(x) (Car[Car[Cdr[Car[x]]]])
#define caaddr(x) (Car[Car[Cdr[Cdr[x]]]])
#define cadaar(x) (Car[Cdr[Car[Car[x]]]])
#define cadadr(x) (Car[Cdr[Car[Cdr[x]]]])
#define caddar(x) (Car[Cdr[Cdr[Car[x]]]])
#define cadddr(x) (Car[Cdr[Cdr[Cdr[x]]]])
#define cdaaar(x) (Cdr[Car[Car[Car[x]]]])
#define cdaadr(x) (Cdr[Car[Car[Cdr[x]]]])
#define cdadar(x) (Cdr[Car[Cdr[Car[x]]]])
#define cdaddr(x) (Cdr[Car[Cdr[Cdr[x]]]])
#define cddaar(x) (Cdr[Cdr[Car[Car[x]]]])
#define cddadr(x) (Cdr[Cdr[Car[Cdr[x]]]])
#define cdddar(x) (Cdr[Cdr[Cdr[Car[x]]]])
#define cddddr(x) (Cdr[Cdr[Cdr[Cdr[x]]]])
/*
* Type predicates
*/
#define eof_p(n) ((n) == END_OF_FILE)
#define undefined_p(n) ((n) == UNDEFINED)
#define unspecific_p(n) ((n) == UNSPECIFIC)
#define boolean_p(n) ((n) == TRUE || (n) == FALSE)
#define constant_p(n) (!special_value_p(n) && (Tag[n] & CONST_TAG))
#define integer_p(n) \
(!special_value_p(n) && (Tag[n] & ATOM_TAG) && Car[n] == T_INTEGER)
#define number_p(n) \
(!special_value_p(n) && (Tag[n] & ATOM_TAG) && \
(Car[n] == T_REAL || Car[n] == T_INTEGER))
#define primitive_p(n) \
(!special_value_p(n) && (Tag[n] & ATOM_TAG) && Car[n] == T_PRIMITIVE)
#define function_p(n) \
(!special_value_p(n) && (Tag[n] & ATOM_TAG) && Car[n] == T_FUNCTION)
#define continuation_p(n) \
(!special_value_p(n) && (Tag[n] & ATOM_TAG) && \
Car[n] == T_CONTINUATION)
#define real_p(n) \
(!special_value_p(n) && (Tag[n] & ATOM_TAG) && Car[n] == T_REAL)
#define char_p(n) \
(!special_value_p(n) && (Tag[n] & ATOM_TAG) && Car[n] == T_CHAR)
#define syntax_p(n) \
(!special_value_p(n) && (Tag[n] & ATOM_TAG) && Car[n] == T_SYNTAX)
#define input_port_p(n) \
(!special_value_p(n) && (Tag[n] & ATOM_TAG) && (Tag[n] & PORT_TAG) \
&& Car[n] == T_INPUT_PORT)
#define output_port_p(n) \
(!special_value_p(n) && (Tag[n] & ATOM_TAG) && (Tag[n] & PORT_TAG) \
&& Car[n] == T_OUTPUT_PORT)
#define symbol_p(n) \
(!special_value_p(n) && (Tag[n] & VECTOR_TAG) && Car[n] == T_SYMBOL)
#define vector_p(n) \
(!special_value_p(n) && (Tag[n] & VECTOR_TAG) && Car[n] == T_VECTOR)
#define string_p(n) \
(!special_value_p(n) && (Tag[n] & VECTOR_TAG) && Car[n] == T_STRING)
#define atom_p(n) \
(special_value_p(n) || (Tag[n] & ATOM_TAG) || (Tag[n] & VECTOR_TAG))
#define pair_p(x) (!atom_p(x))
/*
* Allocators
*/
#define cons(pa, pd) cons3((pa), (pd), 0)
#define new_atom(pa, pd) cons3((pa), (pd), ATOM_TAG)
#define save(n) (Stack = cons((n), Stack))
/*
* Bignum arithmetics
*/
#define bignum_negative_p(a) ((cadr(a)) < 0)
#define bignum_zero_p(a) ((cadr(a)) == 0)
#define bignum_positive_p(a) ((cadr(a)) > 0)
/*
* Real number structure
*/
#define Real_flags(x) (cadr(x))
#define Real_exponent(x) (caddr(x))
#define Real_mantissa(x) (cdddr(x))
#define REAL_NEGATIVE 0x01
#define Real_negative_flag(x) (Real_flags(x) & REAL_NEGATIVE)
/*
* Real-number arithmetics
*/
#define Real_zero_p(x) \
(car(Real_mantissa(x)) == 0 && cdr(Real_mantissa(x)) == NIL)
#define Real_negative_p(x) \
(Real_negative_flag(x) && !Real_zero_p(x))
#define Real_positive_p(x) \
(!Real_negative_flag(x) && !Real_zero_p(x))
#define Real_negate(a) \
Make_quick_real(Real_flags(a) & REAL_NEGATIVE? \
Real_flags(a) & ~REAL_NEGATIVE: \
Real_flags(a) | REAL_NEGATIVE, \
Real_exponent(a), Real_mantissa(a))
/*
* Globals
*/
extern cell *Car,
*Cdr;
extern char *Tag;
extern cell *Vectors;
extern cell Stack;
extern PRIM *Primitives;
extern cell Zero,
One,
Two;
extern cell Epsilon;
extern FILE *Ports[];
extern int Input_port,
Output_port,
Error_port;
/*
* Prototypes
*/
void add_image_vars(cell **v);
cell apply_prim(cell f, cell a);
long asctol(char *s);
cell bignum_abs(cell a);
cell bignum_add(cell a, cell b);
cell bignum_divide(cell a, cell b);
int bignum_equal_p(cell a, cell b);
int bignum_even_p(cell a);
int bignum_less_p(cell a, cell b);
cell bignum_multiply(cell a, cell b);
cell bignum_negate(cell a);
cell bignum_shift_left(cell a, int fill);
cell bignum_shift_right(cell a);
cell bignum_subtract(cell a, cell b);
cell bignum_to_int(cell x);
cell bignum_to_real(cell a);
cell bignum_to_string(cell x);
int blockread(char *s, int k);
void blockwrite(char *s, int k);
void close_port(int port);
void close_input_string(void);
cell cons3(cell pcar, cell pcdr, int ptag);
void cons_stats(int x);
cell copy_string(cell x);
void count(counter *c);
char *dump_image(char *path, char *magic);
void exponent_chars(char *s);
void fatal(char *msg);
cell find_symbol(char *s);
cell flat_copy(cell n, cell *lastp);
void flush(void);
int gc(void);
int gcv(void);
void gc_verbosity(int n);
void get_counters(counter **nc, counter **cc, counter **gc);
void mem_error_handler(void (*h)(int src));
void image_vars(cell **v);
int input_port(void);
int integer_string_p(char *s);
cell intern_symbol(cell y);
int io_status(void);
void io_reset(void);
int length(cell n);
char *load_image(char *path, char *magic);
int lock_port(int port);
cell make_char(int c);
cell make_integer(cell i);
cell make_norm_real(int flags, cell exp, cell mant);
cell make_port(int portno, cell type);
cell make_primitive(PRIM *p);
cell Make_real(int flags, cell exp, cell mant);
cell make_real(int sign, cell exp, cell mant);
cell make_string(char *s, int k);
cell make_symbol(char *s, int k);
cell make_vector(int k);
int new_port(void);
cell new_vec(cell type, int size);
int open_input_port(char *path);
char *open_input_string(char *s);
int open_output_port(char *path, int append);
int output_port(void);
int port_eof(int p);
void prints(char *s);
int printer_limit(void);
void print_bignum(cell n);
void print_expanded_real(cell n);
void print_real(cell n);
void print_sci_real(cell n);
int readc(void);
cell read_counter(counter *c);
cell real_abs(cell a);
cell real_add(cell a, cell b);
cell real_ceil(cell x);
cell real_divide(cell a, cell b);
int real_equal_p(cell a, cell b);
cell real_exponent(cell x);
cell real_floor(cell x);
cell real_integer_p(cell x);
int real_less_p(cell a, cell b);
cell real_mantissa(cell x);
cell real_multiply(cell a, cell b);
cell real_negate(cell a);
cell real_negative_p(cell a);
cell real_positive_p(cell a);
cell real_power(cell x, cell y);
cell real_sqrt(cell x);
cell real_subtract(cell a, cell b);
cell real_to_bignum(cell r);
cell real_to_string(cell r, int mode);
cell real_trunc(cell x);
cell real_zero_p(cell a);
void reject(int c);
void reset_counter(counter *c);
void reset_std_ports(void);
void run_stats(int x);
void s9fini(void);
void s9init(cell **extroots);
cell set_input_port(cell port);
void set_node_limit(int k);
cell set_output_port(cell port);
void set_printer_limit(int k);
void set_vector_limit(int k);
int string_numeric_p(char *s);
cell string_to_bignum(char *s);
cell string_to_number(char *s);
cell string_to_real(char *s);
cell string_to_symbol(cell x);
cell symbol_ref(char *s);
cell symbol_table(void);
cell symbol_to_string(cell x);
char *typecheck(cell f, cell a);
int unlock_port(int port);
cell unsave(int k);
#ifdef S9FES
void add_primitives(char *name, PRIM *p);
cell error(char *msg, cell expr);
cell integer_value(char *src, cell x);
#endif
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