newlib/libc/stdlib/stdlib.tex

   1 @node Stdlib
   2 @chapter Standard Utility Functions (@file{stdlib.h})
   3
   4 This chapter groups utility functions useful in a variety of programs.
   5 The corresponding declarations are in the header file @file{stdlib.h}.
   6
   7 @menu
   8 * Function _Exit::       End program execution without cleaning up
   9 * Function a64l::        String to long long
  10 * Function abort::       Abnormal termination of a program
  11 * Function abs::         Integer absolute value (magnitude)
  12 * Function assert::      Macro for Debugging Diagnostics
  13 * Function atexit::      Request execution of functions at program exit
  14 * Function atof::        String to double or float
  15 * Function atoi::        String to integer
  16 * Function atoll::       String to long long
  17 * Function bsearch::     Binary search
  18 * Function calloc::      Allocate space for arrays
  19 * Function div::         Divide two integers
  20 * Function ecvtbuf::     Double or float to string of digits
  21 * Function ecvt::        Double or float to string of digits (malloc result)
  22 * Function __env_lock::  Lock environment list for getenv and setenv
  23 * Function gcvt::        Format double or float as string
  24 * Function exit::        End program execution
  25 * Function getenv::      Look up environment variable
  26 * Function itoa::        Integer to string
  27 * Function labs::        Long integer absolute value (magnitude)
  28 * Function ldiv::        Divide two long integers
  29 * Function llabs::       Long long integer absolute value (magnitude)
  30 * Function lldiv::       Divide two long long integers
  31 * Function malloc::      Allocate and manage memory (malloc, realloc, free)
  32 * Function mallinfo::    Get information about allocated memory
  33 * Function __malloc_lock::      Lock memory pool for malloc and free
  34 * Function mbsrtowcs::   Convert a character string to a wide-character string
  35 * Function mbstowcs::    Minimal multibyte string to wide string converter
  36 * Function mblen::       Minimal multibyte length
  37 * Function mbtowc::      Minimal multibyte to wide character converter
  38 * Function on_exit::     Request execution of functions at program exit
  39 * Function qsort::       Array sort
  40 * Function rand::        Pseudo-random numbers
  41 * Function random::      Pseudo-random numbers
  42 * Function rand48::      Uniformly distributed pseudo-random numbers
  43 * Function rpmatch::     Determine whether response is affirmative or negative
  44 * Function strtod::      String to double or float
  45 * Function strtol::      String to long
  46 * Function strtoll::     String to long long
  47 * Function strtoul::     String to unsigned long
  48 * Function strtoull::    String to unsigned long long
  49 * Function wcsrtombs::   Convert a wide-character string to a character string
  50 * Function wcstod::      Wide string to double or float
  51 * Function wcstol::      Wide string to long
  52 * Function wcstoll::     Wide string to long long
  53 * Function wcstoul::     Wide string to unsigned long
  54 * Function wcstoull::    Wide string to unsigned long long
  55 * Function system::      Execute command string
  56 * Function utoa::        Unsigned integer to string
  57 * Function wcstombs::    Minimal wide string to multibyte string converter
  58 * Function wctomb::      Minimal wide character to multibyte converter
  59 @end menu
  60
  61 @page
  62 @include stdlib/_Exit.def
  63
  64 @page
  65 @include stdlib/a64l.def
  66
  67 @page
  68 @include stdlib/abort.def
  69
  70 @page
  71 @include stdlib/abs.def
  72
  73 @page
  74 @include stdlib/assert.def
  75
  76 @page
  77 @include stdlib/atexit.def
  78
  79 @page
  80 @include stdlib/atof.def
  81
  82 @page
  83 @include stdlib/atoi.def
  84
  85 @page
  86 @include stdlib/atoll.def
  87
  88 @page
  89 @include search/bsearch.def
  90
  91 @page
  92 @include stdlib/calloc.def
  93
  94 @page
  95 @include stdlib/div.def
  96
  97 @page
  98 @include stdlib/efgcvt.def
  99
 100 @page
 101 @include stdlib/ecvtbuf.def
 102
 103 @page
 104 @include stdlib/envlock.def
 105
 106 @page
 107 @include stdlib/exit.def
 108
 109 @page
 110 @include stdlib/getenv.def
 111
 112 @page
 113 @include stdlib/itoa.def
 114
 115 @page
 116 @include stdlib/labs.def
 117
 118 @page
 119 @include stdlib/ldiv.def
 120
 121 @page
 122 @include stdlib/llabs.def
 123
 124 @page
 125 @include stdlib/lldiv.def
 126
 127 @page
 128 @include stdlib/malloc.def
 129
 130 @page
 131 @include stdlib/mstats.def
 132
 133 @page
 134 @include stdlib/mlock.def
 135
 136 @page
 137 @include stdlib/mblen.def
 138
 139 @page
 140 @include stdlib/mbsnrtowcs.def
 141
 142 @page
 143 @include stdlib/mbstowcs.def
 144
 145 @page
 146 @include stdlib/mbtowc.def
 147
 148 @page
 149 @include stdlib/on_exit.def
 150
 151 @page
 152 @include search/qsort.def
 153
 154 @page
 155 @include stdlib/rand.def
 156
 157 @page
 158 @include stdlib/random.def
 159
 160 @page
 161 @include stdlib/rand48.def
 162
 163 @page
 164 @include stdlib/rpmatch.def
 165
 166 @page
 167 @include stdlib/strtod.def
 168
 169 @page
 170 @include stdlib/strtol.def
 171
 172 @page
 173 @include stdlib/strtoll.def
 174
 175 @page
 176 @include stdlib/strtoul.def
 177
 178 @page
 179 @include stdlib/strtoull.def
 180
 181 @page
 182 @include stdlib/wcsnrtombs.def
 183
 184 @page
 185 @include stdlib/wcstod.def
 186
 187 @page
 188 @include stdlib/wcstol.def
 189
 190 @page
 191 @include stdlib/wcstoll.def
 192
 193 @page
 194 @include stdlib/wcstoul.def
 195
 196 @page
 197 @include stdlib/wcstoull.def
 198
 199 @page
 200 @include stdlib/system.def
 201
 202 @page
 203 @include stdlib/utoa.def
 204
 205 @page
 206 @include stdlib/wcstombs.def
 207
 208 @page
 209 @include stdlib/wctomb.def
 210