S-Lang Library Intrinsic Function Reference (v2.3.0)

John E. Davis <www.jedsoft.org>

1. Preface

2. Data Types

• 2.1 Assoc_Type
• 2.2 File_Type
• 2.3 List_Type
• 2.4 String_Type
• 2.5 Struct_Type

3. Array Functions

• 3.1 all
• 3.2 any
• 3.3 array_info
• 3.4 array_map
• 3.5 array_reverse
• 3.6 array_shape
• 3.7 array_sort
• 3.8 array_swap
• 3.9 cumsum
• 3.10 get_default_sort_method
• 3.11 init_char_array
• 3.12 _isnull
• 3.13 length
• 3.14 max
• 3.15 maxabs
• 3.16 min
• 3.17 minabs
• 3.18 _reshape
• 3.19 reshape
• 3.20 set_default_sort_method
• 3.21 sum
• 3.22 sumsq
• 3.23 transpose
• 3.24 where
• 3.25 wherediff
• 3.26 wherefirst
• 3.27 wherefirstmax
• 3.28 wherefirstmin
• 3.29 wherelast
• 3.30 wherelastmax
• 3.31 wherelastmin
• 3.32 wherenot

4. Associative Array Functions

• 4.1 assoc_delete_key
• 4.2 assoc_get_keys
• 4.3 assoc_get_values
• 4.4 assoc_key_exists

5. Functions that Operate on Strings

• 5.1 count_char_occurrences
• 5.2 create_delimited_string
• 5.3 extract_element
• 5.4 glob_to_regexp
• 5.5 is_list_element
• 5.6 is_substr
• 5.7 make_printable_string
• 5.8 Sprintf
• 5.9 strbskipchar
• 5.10 sprintf
• 5.11 sscanf
• 5.12 strbytelen
• 5.13 strbytesub
• 5.14 strcat
• 5.15 strcharlen
• 5.16 strchop
• 5.17 strchopr
• 5.18 strcmp
• 5.19 strcompress
• 5.20 string_match
• 5.21 string_match_nth
• 5.22 string_matches
• 5.23 strjoin
• 5.24 strlen
• 5.25 strlow
• 5.26 strnbytecmp
• 5.27 strncharcmp
• 5.28 strncmp
• 5.29 strreplace
• 5.30 strskipbytes
• 5.31 strskipchar
• 5.32 strsub
• 5.33 strtok
• 5.34 strtrans
• 5.35 strtrim
• 5.36 strtrim_beg
• 5.37 strtrim_end
• 5.38 strup
• 5.39 str_delete_chars
• 5.40 str_quote_string
• 5.41 str_replace
• 5.42 str_uncomment_string
• 5.43 substr
• 5.44 substrbytes

6. Functions that Operate on Binary Strings

• 6.1 array_to_bstring
• 6.2 bstring_to_array
• 6.3 bstrcat
• 6.4 bstrjoin
• 6.5 bstrlen
• 6.6 count_byte_occurrences
• 6.7 is_substrbytes
• 6.8 pack
• 6.9 pad_pack_format
• 6.10 sizeof_pack
• 6.11 unpack

7. Functions that Manipulate Structures

• 7.1 __add_binary
• 7.2 __add_string
• 7.3 __add_typecast
• 7.4 __add_unary
• 7.5 get_struct_field
• 7.6 get_struct_field_names
• 7.7 _is_struct_type
• 7.8 is_struct_type
• 7.9 _push_struct_field_values
• 7.10 set_struct_field
• 7.11 set_struct_fields

8. Functions that Create and Manipulate Lists

• 8.1 list_append
• 8.2 list_concat
• 8.3 list_delete
• 8.4 list_insert
• 8.5 list_join
• 8.6 list_new
• 8.7 list_pop
• 8.8 list_reverse
• 8.9 list_to_array

9. Informational Functions

• 9.1 add_doc_file
• 9.2 _apropos
• 9.3 __FILE__
• 9.4 _function_name
• 9.5 __get_defined_symbols
• 9.6 get_doc_files
• 9.7 get_doc_string_from_file
• 9.8 _get_namespaces
• 9.9 is_defined
• 9.10 __is_initialized
• 9.11 _NARGS
• 9.12 set_doc_files
• 9.13 _slang_doc_dir
• 9.14 _slang_version
• 9.15 _slang_version_string

10. Mathematical Functions

• 10.1 abs
• 10.2 acos
• 10.3 acosh
• 10.4 asin
• 10.5 asinh
• 10.6 atan
• 10.7 atan2
• 10.8 atanh
• 10.9 ceil
• 10.10 Conj
• 10.11 cos
• 10.12 cosh
• 10.13 _diff
• 10.14 exp
• 10.15 expm1
• 10.16 feqs
• 10.17 fgteqs
• 10.18 floor
• 10.19 flteqs
• 10.20 fneqs
• 10.21 get_float_format
• 10.22 hypot
• 10.23 Imag
• 10.24 isinf
• 10.25 isnan
• 10.26 _isneg
• 10.27 _isnonneg
• 10.28 _ispos
• 10.29 log
• 10.30 log10
• 10.31 log1p
• 10.32 _max
• 10.33 _min
• 10.34 mul2
• 10.35 nint
• 10.36 polynom
• 10.37 Real
• 10.38 round
• 10.39 set_float_format
• 10.40 sign
• 10.41 sin
• 10.42 sincos
• 10.43 sinh
• 10.44 sqr
• 10.45 sqrt
• 10.46 tan
• 10.47 tanh

11. Message and Error Functions

• 11.1 errno
• 11.2 errno_string
• 11.3 error
• 11.4 __get_exception_info
• 11.5 message
• 11.6 new_exception
• 11.7 usage
• 11.8 verror
• 11.9 vmessage

12. Time and Date Functions

• 12.1 ctime
• 12.2 gmtime
• 12.3 localtime
• 12.4 mktime
• 12.5 strftime
• 12.6 _tic
• 12.7 tic
• 12.8 _time
• 12.9 time
• 12.10 timegm
• 12.11 times
• 12.12 _toc
• 12.13 toc

13. Data-Type Conversion Functions

• 13.1 atof
• 13.2 atoi
• 13.3 atol
• 13.4 atoll
• 13.5 char
• 13.6 define_case
• 13.7 double
• 13.8 int
• 13.9 integer
• 13.10 isalnum, isalpha, isascii, isblank, iscntrl, isdigit, isgraph, islower, isprint, ispunct, isspace, isupper, isxdigit
• 13.11 _slang_guess_type
• 13.12 string
• 13.13 tolower
• 13.14 toupper
• 13.15 typecast
• 13.16 _typeof
• 13.17 typeof

14. Stdio File I/O Functions

• 14.1 clearerr
• 14.2 fclose
• 14.3 fdopen
• 14.4 feof
• 14.5 ferror
• 14.6 fflush
• 14.7 fgets
• 14.8 fgetslines
• 14.9 fopen
• 14.10 fprintf
• 14.11 fputs
• 14.12 fputslines
• 14.13 fread
• 14.14 fread_bytes
• 14.15 fseek
• 14.16 ftell
• 14.17 fwrite
• 14.18 pclose
• 14.19 popen
• 14.20 printf
• 14.21 setvbuf

15. Low-level POSIX I/O functions

• 15.1 close
• 15.2 _close
• 15.3 dup_fd
• 15.4 dup2_fd
• 15.5 _fileno
• 15.6 fileno
• 15.7 isatty
• 15.8 lseek
• 15.9 open
• 15.10 read
• 15.11 write

16. Signal Functions

• 16.1 alarm
• 16.2 getitimer
• 16.3 setitimer
• 16.4 signal
• 16.5 sigprocmask
• 16.6 sigsuspend

17. Directory Functions

• 17.1 access
• 17.2 chdir
• 17.3 chmod
• 17.4 chown
• 17.5 getcwd
• 17.6 hardlink
• 17.7 lchown
• 17.8 listdir
• 17.9 lstat_file
• 17.10 mkdir
• 17.11 readlink
• 17.12 remove
• 17.13 rename
• 17.14 rmdir
• 17.15 stat_file
• 17.16 stat_is
• 17.17 stat_mode_to_string
• 17.18 symlink
• 17.19 utime

18. Functions that Parse Filenames

• 18.1 path_basename
• 18.2 path_basename_sans_extname
• 18.3 path_concat
• 18.4 path_dirname
• 18.5 path_extname
• 18.6 path_get_delimiter
• 18.7 path_is_absolute
• 18.8 path_sans_extname

19. System Call Functions

• 19.1 getegid
• 19.2 geteuid
• 19.3 getgid
• 19.4 getpgid
• 19.5 getpgrp
• 19.6 getpid
• 19.7 getppid
• 19.8 getpriority
• 19.9 getrusage
• 19.10 getsid
• 19.11 getuid
• 19.12 kill
• 19.13 killpg
• 19.14 mkfifo
• 19.15 setgid
• 19.16 setpgid
• 19.17 setpriority
• 19.18 setsid
• 19.19 setuid
• 19.20 sleep
• 19.21 system
• 19.22 system_intr
• 19.23 umask
• 19.24 uname

20. Eval Functions

• 20.1 _$
• 20.2 autoload
• 20.3 byte_compile_file
• 20.4 eval
• 20.5 evalfile
• 20.6 get_slang_load_path
• 20.7 set_slang_load_path

21. Qualifier Functions

• 21.1 qualifier
• 21.2 __qualifiers
• 21.3 qualifier_exists

22. Module Functions

• 22.1 get_import_module_path
• 22.2 import
• 22.3 set_import_module_path

23. Debugging Functions

• 23.1 _bofeof_info
• 23.2 _boseos_info
• 23.3 _clear_error
• 23.4 _get_frame_info
• 23.5 _get_frame_variable
• 23.6 _set_bof_handler
• 23.7 _set_bos_handler
• 23.8 _set_eof_handler
• 23.9 _set_eos_handler
• 23.10 _slangtrace
• 23.11 _traceback
• 23.12 _trace_function
• 23.13 _use_frame_namespace

24. Stack Functions

• 24.1 dup
• 24.2 exch
• 24.3 pop
• 24.4 __pop_args
• 24.5 __pop_list
• 24.6 _pop_n
• 24.7 _print_stack
• 24.8 __push_args
• 24.9 __push_list
• 24.10 _stkdepth
• 24.11 _stk_reverse
• 24.12 _stk_roll

25. Functions that deal with the S-Lang readline interface

• 25.1 rline_bolp
• 25.2 rline_call
• 25.3 rline_del
• 25.4 rline_eolp
• 25.5 rline_getkey
• 25.6 rline_get_edit_width
• 25.7 rline_get_history
• 25.8 rline_get_line
• 25.9 rline_get_point
• 25.10 rline_input_pending
• 25.11 rline_ins
• 25.12 rline_setkey
• 25.13 rline_set_completion_callback
• 25.14 rline_set_history
• 25.15 rline_set_line
• 25.16 rline_set_list_completions_callback
• 25.17 rline_set_point
• 25.18 rline_unsetkey

26. Miscellaneous Functions

• 26.1 _auto_declare
• 26.2 __class_id
• 26.3 __class_type
• 26.4 current_namespace
• 26.5 __datatype
• 26.6 _eqs
• 26.7 get_environ
• 26.8 getenv
• 26.9 __get_reference
• 26.10 implements
• 26.11 __is_callable
• 26.12 __is_datatype_numeric
• 26.13 __is_numeric
• 26.14 __is_same
• 26.15 putenv
• 26.16 __set_argc_argv
• 26.17 _slang_install_prefix
• 26.18 _slang_utf8_ok
• 26.19 __tmp
• 26.20 __uninitialize
• 26.21 use_namespace