GNU Fortran 7
GNU Fortran 7
  1. 1. Introduction
    1. 1. Introduction
    2. 1.1. About GNU Fortran
    3. 1.2. GNU Fortran and GCC
    4. 1.3. Preprocessing and conditional compilation
    5. 1.4. GNU Fortran and G77
    6. 1.5. Project Status
    7. 1.6. Standards
    8. 1.6.1. Varying Length Character Strings
  2. 10. Intrinsic Modules
    1. 10. Intrinsic Modules
    2. 10.1. ISO_FORTRAN_ENV
    3. 10.2. ISO_C_BINDING
    4. 10.3. IEEE modules: IEEE_EXCEPTIONS, IEEE_ARITHMETIC, and IEEE_FEATURES
    5. 10.4. OpenMP Modules OMP_LIB and OMP_LIB_KINDS
    6. 10.5. OpenACC Module OPENACC
  3. 2. Command Options
    1. 2. GNU Fortran Command Options
    2. 2.1. Option summary
    3. 2.10. Environment variables affecting gfortran
    4. 2.2. Options controlling Fortran dialect
    5. 2.3. Enable and customize preprocessing
    6. 2.4. Options to request or suppress errors and warnings
    7. 2.5. Options for debugging your program or GNU Fortran
    8. 2.6. Options for directory search
    9. 2.7. Influencing the linking step
    10. 2.8. Influencing runtime behavior
    11. 2.9. Options for code generation conventions
  4. 3. Runtime
    1. 3. Runtime: Influencing runtime behavior with environment variables
    2. 3.1. TMPDIR
    3. 3.10. GFORTRAN_LIST_SEPARATOR
    4. 3.11. GFORTRAN_CONVERT_UNIT
    5. 3.12. GFORTRAN_ERROR_BACKTRACE
    6. 3.2. GFORTRAN_STDIN_UNIT
    7. 3.3. GFORTRAN_STDOUT_UNIT
    8. 3.4. GFORTRAN_STDERR_UNIT
    9. 3.5. GFORTRAN_UNBUFFERED_ALL
    10. 3.6. GFORTRAN_UNBUFFERED_PRECONNECTED
    11. 3.7. GFORTRAN_SHOW_LOCUS
    12. 3.8. GFORTRAN_OPTIONAL_PLUS
    13. 3.9. GFORTRAN_DEFAULT_RECL
  5. 4. Fortran 2003 and 2008 Status
    1. 4. Fortran 2003 and 2008 Status
    2. 4.1. Fortran 2003 status
    3. 4.2. Fortran 2008 status
    4. 4.3. Technical Specification 29113 Status
    5. 4.4. Technical Specification 18508 Status
  6. 5. Compiler Characteristics
    1. 5. Compiler Characteristics
    2. 5.1. KIND Type Parameters
    3. 5.2. Internal representation of LOGICAL variables
    4. 5.3. Thread-safety of the runtime library
    5. 5.4. Data consistency and durability
    6. 5.5. Files opened without an explicit ACTION= specifier
    7. 5.6. File operations on symbolic links
  7. 6. Extensions
    1. 6. Extensions
    2. 6.1. Extensions implemented in GNU Fortran
    3. 6.1.1. Old-style kind specifications
    4. 6.1.10. Real array indices
    5. 6.1.11. Unary operators
    6. 6.1.12. Implicitly convert LOGICAL and INTEGER values
    7. 6.1.13. Hollerith constants support
    8. 6.1.14. Cray pointers
    9. 6.1.15. CONVERT specifier
    10. 6.1.16. OpenMP
    11. 6.1.17. OpenACC
    12. 6.1.18. Argument list functions %VAL, %REF and %LOC
    13. 6.1.19. Read/Write after EOF marker
    14. 6.1.2. Old-style variable initialization
    15. 6.1.20. STRUCTURE and RECORD
    16. 6.1.21. UNION and MAP
    17. 6.1.22. Type variants for integer intrinsics
    18. 6.1.23. AUTOMATIC and STATIC attributes
    19. 6.1.24. Extended math intrinsics
    20. 6.1.25. Form feed as whitespace
    21. 6.1.26. TYPE as an alias for PRINT
    22. 6.1.27. %LOC as an rvalue
    23. 6.1.28. .XOR. operator
    24. 6.1.29. Bitwise logical operators
    25. 6.1.3. Extensions to namelist
    26. 6.1.30. Extended I/O specifiers
    27. 6.1.31. Legacy PARAMETER statements
    28. 6.1.32. Default exponents
    29. 6.1.4. X format descriptor without count field
    30. 6.1.5. Commas in FORMAT specifications
    31. 6.1.6. Missing period in FORMAT specifications
    32. 6.1.7. I/O item lists
    33. 6.1.8. Q exponent-letter
    34. 6.1.9. BOZ literal constants
    35. 6.2. Extensions not implemented in GNU Fortran
    36. 6.2.1. ENCODE and DECODE statements
    37. 6.2.2. Variable FORMAT expressions
    38. 6.2.3. Alternate complex function syntax
    39. 6.2.4. Volatile COMMON blocks
    40. 6.2.5. OPEN( ... NAME=)
  8. 7. Mixed-Language Programming
    1. 7. Mixed-Language Programming
    2. 7.1. Interoperability with C
    3. 7.1.1. Intrinsic Types
    4. 7.1.2. Derived Types and struct
    5. 7.1.3. Interoperable Global Variables
    6. 7.1.4. Interoperable Subroutines and Functions
    7. 7.1.5. Working with Pointers
    8. 7.1.6. Further Interoperability of Fortran with C
    9. 7.2. GNU Fortran Compiler Directives
    10. 7.3. Non-Fortran Main Program
    11. 7.3.1. _gfortran_set_args
    12. 7.3.2. _gfortran_set_options
    13. 7.3.3. _gfortran_set_convert
    14. 7.3.4. _gfortran_set_record_marker
    15. 7.3.5. _gfortran_set_fpe
    16. 7.3.6. _gfortran_set_max_subrecord_length
    17. 7.4. Naming and argument-passing conventions
    18. 7.4.1. Naming conventions
    19. 7.4.2. Argument passing conventions
  9. 8. Coarray Programming
    1. 8. Coarray Programming
    2. 8.1. Type and enum ABI Documentation
    3. 8.1.1. caf_token_t
    4. 8.1.2. caf_register_t
    5. 8.1.3. caf_deregister_t
    6. 8.1.4. caf_reference_t
    7. 8.1.5. caf_team_t
    8. 8.2. Function ABI Documentation
    9. 8.2.1. _gfortran_caf_init
    10. 8.2.10. _gfortran_caf_is_present
    11. 8.2.11. _gfortran_caf_send
    12. 8.2.12. _gfortran_caf_get
    13. 8.2.13. _gfortran_caf_sendget
    14. 8.2.14. _gfortran_caf_send_by_ref
    15. 8.2.15. _gfortran_caf_get_by_ref
    16. 8.2.16. _gfortran_caf_sendget_by_ref
    17. 8.2.17. _gfortran_caf_lock
    18. 8.2.18. _gfortran_caf_lock
    19. 8.2.19. _gfortran_caf_event_post
    20. 8.2.2. _gfortran_caf_finish
    21. 8.2.20. _gfortran_caf_event_wait
    22. 8.2.21. _gfortran_caf_event_query
    23. 8.2.22. _gfortran_caf_sync_all
    24. 8.2.23. _gfortran_caf_sync_images
    25. 8.2.24. _gfortran_caf_sync_memory
    26. 8.2.25. _gfortran_caf_error_stop
    27. 8.2.26. _gfortran_caf_error_stop_str
    28. 8.2.27. _gfortran_caf_fail_image
    29. 8.2.28. _gfortran_caf_atomic_define
    30. 8.2.29. _gfortran_caf_atomic_ref
    31. 8.2.3. _gfortran_caf_this_image
    32. 8.2.30. _gfortran_caf_atomic_cas
    33. 8.2.31. _gfortran_caf_atomic_op
    34. 8.2.32. _gfortran_caf_co_broadcast
    35. 8.2.33. _gfortran_caf_co_max
    36. 8.2.34. _gfortran_caf_co_min
    37. 8.2.35. _gfortran_caf_co_sum
    38. 8.2.36. _gfortran_caf_co_reduce
    39. 8.2.4. _gfortran_caf_num_images
    40. 8.2.5. _gfortran_caf_image_status
    41. 8.2.6. _gfortran_caf_failed_images
    42. 8.2.7. _gfortran_caf_stopped_images
    43. 8.2.8. _gfortran_caf_register
    44. 8.2.9. _gfortran_caf_deregister
  10. 9. Intrinsic Procedures
    1. 9. Intrinsic Procedures
    2. 9.1. Introduction to intrinsic procedures
    3. 9.10. ADJUSTR
    4. 9.100. EXECUTE_COMMAND_LINE
    5. 9.101. EXIT
    6. 9.102. EXP
    7. 9.103. EXPONENT
    8. 9.104. EXTENDS_TYPE_OF
    9. 9.105. FDATE
    10. 9.106. FGET
    11. 9.107. FGETC
    12. 9.108. FLOOR
    13. 9.109. FLUSH
    14. 9.11. AIMAG
    15. 9.110. FNUM
    16. 9.111. FPUT
    17. 9.112. FPUTC
    18. 9.113. FRACTION
    19. 9.114. FREE
    20. 9.115. FSEEK
    21. 9.116. FSTAT
    22. 9.117. FTELL
    23. 9.118. GAMMA
    24. 9.119. GERROR
    25. 9.12. AINT
    26. 9.120. GETARG
    27. 9.121. GET_COMMAND
    28. 9.122. GET_COMMAND_ARGUMENT
    29. 9.123. GETCWD
    30. 9.124. GETENV
    31. 9.125. GET_ENVIRONMENT_VARIABLE
    32. 9.126. GETGID
    33. 9.127. GETLOG
    34. 9.128. GETPID
    35. 9.129. GETUID
    36. 9.13. ALARM
    37. 9.130. GMTIME
    38. 9.131. HOSTNM
    39. 9.132. HUGE
    40. 9.133. HYPOT
    41. 9.134. IACHAR
    42. 9.135. IALL
    43. 9.136. IAND
    44. 9.137. IANY
    45. 9.138. IARGC
    46. 9.139. IBCLR
    47. 9.14. ALL
    48. 9.140. IBITS
    49. 9.141. IBSET
    50. 9.142. ICHAR
    51. 9.143. IDATE
    52. 9.144. IEOR
    53. 9.145. IERRNO
    54. 9.146. IMAGE_INDEX
    55. 9.147. INDEX
    56. 9.148. INT
    57. 9.149. INT2
    58. 9.15. ALLOCATED
    59. 9.150. INT8
    60. 9.151. IOR
    61. 9.152. IPARITY
    62. 9.153. IRAND
    63. 9.154. IS_IOSTAT_END
    64. 9.155. IS_IOSTAT_EOR
    65. 9.156. ISATTY
    66. 9.157. ISHFT
    67. 9.158. ISHFTC
    68. 9.159. ISNAN
    69. 9.16. AND
    70. 9.160. ITIME
    71. 9.161. KILL
    72. 9.162. KIND
    73. 9.163. LBOUND
    74. 9.164. LCOBOUND
    75. 9.165. LEADZ
    76. 9.166. LEN
    77. 9.167. LEN_TRIM
    78. 9.168. LGE
    79. 9.169. LGT
    80. 9.17. ANINT
    81. 9.170. LINK
    82. 9.171. LLE
    83. 9.172. LLT
    84. 9.173. LNBLNK
    85. 9.174. LOC
    86. 9.175. LOG
    87. 9.176. LOG10
    88. 9.177. LOG_GAMMA
    89. 9.178. LOGICAL
    90. 9.179. LONG
    91. 9.18. ANY
    92. 9.180. LSHIFT
    93. 9.181. LSTAT
    94. 9.182. LTIME
    95. 9.183. MALLOC
    96. 9.184. MASKL
    97. 9.185. MASKR
    98. 9.186. MATMUL
    99. 9.187. MAX
    100. 9.188. MAXEXPONENT
    101. 9.189. MAXLOC
    102. 9.19. ASIN
    103. 9.190. MAXVAL
    104. 9.191. MCLOCK
    105. 9.192. MCLOCK8
    106. 9.193. MERGE
    107. 9.194. MERGE_BITS
    108. 9.195. MIN
    109. 9.196. MINEXPONENT
    110. 9.197. MINLOC
    111. 9.198. MINVAL
    112. 9.199. MOD
    113. 9.2. ABORT
    114. 9.20. ASIND
    115. 9.200. MODULO
    116. 9.201. MOVE_ALLOC
    117. 9.202. MVBITS
    118. 9.203. NEAREST
    119. 9.204. NEW_LINE
    120. 9.205. NINT
    121. 9.206. NORM2
    122. 9.207. NOT
    123. 9.208. NULL
    124. 9.209. NUM_IMAGES
    125. 9.21. ASINH
    126. 9.210. OR
    127. 9.211. PACK
    128. 9.212. PARITY
    129. 9.213. PERROR
    130. 9.214. POPCNT
    131. 9.215. POPPAR
    132. 9.216. PRECISION
    133. 9.217. PRESENT
    134. 9.218. PRODUCT
    135. 9.219. RADIX
    136. 9.22. ASSOCIATED
    137. 9.220. RAN
    138. 9.221. RAND
    139. 9.222. RANDOM_NUMBER
    140. 9.223. RANDOM_SEED
    141. 9.224. RANGE
    142. 9.225. RANK
    143. 9.226. REAL
    144. 9.227. RENAME
    145. 9.228. REPEAT
    146. 9.229. RESHAPE
    147. 9.23. ATAN
    148. 9.230. RRSPACING
    149. 9.231. RSHIFT
    150. 9.232. SAME_TYPE_AS
    151. 9.233. SCALE
    152. 9.234. SCAN
    153. 9.235. SECNDS
    154. 9.236. SECOND
    155. 9.237. SELECTED_CHAR_KIND
    156. 9.238. SELECTED_INT_KIND
    157. 9.239. SELECTED_REAL_KIND
    158. 9.24. ATAND
    159. 9.240. SET_EXPONENT
    160. 9.241. SHAPE
    161. 9.242. SHIFTA
    162. 9.243. SHIFTL
    163. 9.244. SHIFTR
    164. 9.245. SIGN
    165. 9.246. SIGNAL
    166. 9.247. SIN
    167. 9.248. SIND
    168. 9.249. SINH
    169. 9.25. ATAN2
    170. 9.250. SIZE
    171. 9.251. SIZEOF
    172. 9.252. SLEEP
    173. 9.253. SPACING
    174. 9.254. SPREAD
    175. 9.255. SQRT
    176. 9.256. SRAND
    177. 9.257. STAT
    178. 9.258. STORAGE_SIZE
    179. 9.259. SUM
    180. 9.26. ATAN2D
    181. 9.260. SYMLNK
    182. 9.261. SYSTEM
    183. 9.262. SYSTEM_CLOCK
    184. 9.263. TAN
    185. 9.264. TAND
    186. 9.265. TANH
    187. 9.266. THIS_IMAGE
    188. 9.267. TIME
    189. 9.268. TIME8
    190. 9.269. TINY
    191. 9.27. ATANH
    192. 9.270. TRAILZ
    193. 9.271. TRANSFER
    194. 9.272. TRANSPOSE
    195. 9.273. TRIM
    196. 9.274. TTYNAM
    197. 9.275. UBOUND
    198. 9.276. UCOBOUND
    199. 9.277. UMASK
    200. 9.278. UNLINK
    201. 9.279. UNPACK
    202. 9.28. ATOMIC_ADD
    203. 9.280. VERIFY
    204. 9.281. XOR
    205. 9.29. ATOMIC_AND
    206. 9.3. ABS
    207. 9.30. ATOMIC_CAS
    208. 9.31. ATOMIC_DEFINE
    209. 9.32. ATOMIC_FETCH_ADD
    210. 9.33. ATOMIC_FETCH_AND
    211. 9.34. ATOMIC_FETCH_OR
    212. 9.35. ATOMIC_FETCH_XOR
    213. 9.36. ATOMIC_OR
    214. 9.37. ATOMIC_REF
    215. 9.38. ATOMIC_XOR
    216. 9.39. BACKTRACE
    217. 9.4. ACCESS
    218. 9.40. BESSEL_J0
    219. 9.41. BESSEL_J1
    220. 9.42. BESSEL_JN
    221. 9.43. BESSEL_Y0
    222. 9.44. BESSEL_Y1
    223. 9.45. BESSEL_YN
    224. 9.46. BGE
    225. 9.47. BGT
    226. 9.48. BIT_SIZE
    227. 9.49. BLE
    228. 9.5. ACHAR
    229. 9.50. BLT
    230. 9.51. BTEST
    231. 9.52. C_ASSOCIATED
    232. 9.53. C_F_POINTER
    233. 9.54. C_F_PROCPOINTER
    234. 9.55. C_FUNLOC
    235. 9.56. C_LOC
    236. 9.57. C_SIZEOF
    237. 9.58. CEILING
    238. 9.59. CHAR
    239. 9.6. ACOS
    240. 9.60. CHDIR
    241. 9.61. CHMOD
    242. 9.62. CMPLX
    243. 9.63. CO_BROADCAST
    244. 9.64. CO_MAX
    245. 9.65. CO_MIN
    246. 9.66. CO_REDUCE
    247. 9.67. CO_SUM
    248. 9.68. COMMAND_ARGUMENT_COUNT
    249. 9.69. COMPILER_OPTIONS
    250. 9.7. ACOSD
    251. 9.70. COMPILER_VERSION
    252. 9.71. COMPLEX
    253. 9.72. CONJG
    254. 9.73. COS
    255. 9.74. COSD
    256. 9.75. COSH
    257. 9.76. COTAN
    258. 9.77. COTAND
    259. 9.78. COUNT
    260. 9.79. CPU_TIME
    261. 9.8. ACOSH
    262. 9.80. CSHIFT
    263. 9.81. CTIME
    264. 9.82. DATE_AND_TIME
    265. 9.83. DBLE
    266. 9.84. DCMPLX
    267. 9.85. DIGITS
    268. 9.86. DIM
    269. 9.87. DOT_PRODUCT
    270. 9.88. DPROD
    271. 9.89. DREAL
    272. 9.9. ADJUSTL
    273. 9.90. DSHIFTL
    274. 9.91. DSHIFTR
    275. 9.92. DTIME
    276. 9.93. EOSHIFT
    277. 9.94. EPSILON
    278. 9.95. ERF
    279. 9.96. ERFC
    280. 9.97. ERFC_SCALED
    281. 9.98. ETIME
    282. 9.99. EVENT_QUERY
  11. Index
    1. index
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