GSoC: Intrinsic functions

[HarshitaKalani]

To keep a track of the tasks that need to be done and are in progress.

Looking forward to implementing intrinsics which are not yet implemented from scratch + adding the compile time implementation of the intrinsic array functions.
Keeping a track of the same here: #492

The following is a list of tasks that are in progress:

• Implement bessel functions

• Compile time implementation of intrinsic array functions:

  • Sum Improve code for eval_sum and implement eval_product #3996
  • Product Improve code for eval_sum and implement eval_product #3996
  • MinVal feat: Implement eval_maxval and eval_minval #4010
  • MaxVal feat: Implement eval_maxval and eval_minval #4010
  • Count Implement eval_count #4012

• Implement intrinsics from scratch

  • Spacing Implement intrinsic spacing #4016
  • Nearest Implement intrinsic nearest #4018
  • Implement ASR node for spacing and nearest
  • Iany Implement array intrinsic iany and iall #4020
  • Iall Implement array intrinsic iany and iall #4020
  • Norm2 Implement array intrinsic norm2 #4035
  • Dgamma Implement intrinsic Dgamma #4088
  • PARITY Implement parity intrinsic #4095
  • IPARITY Implement iparity intrinsic function #4094
  • Isnan Implement isnan intrinsic  #4097
  • Int feat: implement intrinsic int #3953
  • Real Implement intrinsic real #4063
  • SAME_TYPE_AS Implement same_type_as intrinsic #4109
  • COMMAND_ARGUMENT_COUNT
  • CSHIFT
  • DATE_AND_TIME
  • DSHIFTR
  • EOSHIFT
  • ERFC_SCALED
  • EVENT_QUERY
  • EXECUTE_COMMAND_LINE
  • EXTENDS_TYPE_OF
  • FINDLOC
  • GET_COMMAND
  • GET_COMMAND_ARGUMENT
  • GET_ENVIRONMENT_VARIABLE
  • GET_TEAM
  • IS_CONTIGUOUS
  • IS_IOSTAT_END
  • IS_IOSTAT_EOR
  • MOVE_ALLOC
  • NULL
  • OUT_OF_RANGE
  • RANDOM_INIT
  • RANDOM_SEED
  • REDUCE
  • SPREAD
  • STORAGE_SIZE

• Throw error for coarrays and atmoic intrinsic chore: throw error for coarray and atomic intrinsics #3888

• Refactoring

  • Merge Refactor: Move merge from 'intrinsic_array_functions' to 'intrinsic_elemental_function' #4026
  • if-else to switch Refactor: Change if-else to switch case #4027
  • Kind Replace 'Kind' from Intrinsic Elemental Function to Type Inquiry Intrinsic Function #4068
  • Support array type return type for elemental intrinsics Support array type return_type for elemental intrinsics #4061
  • Reshape intrinsic
  • Add bozconstant support in automatic script
  • Handle optional args for minloc and maxloc Handle character arg, mask, kind and back keywords for minloc and maxloc  #4128

• Remove from old runtime library Remove old Fortran runtime library #3034

  • Achar feat: Implement achar intrinsic #3635
  • Remove lfortran_intrinsic_sin file Remove lfortran_intrinsic_sin file from runtime library #4089
  • trim Implement len_trim and trim intrinsic #3674
  • len_trim Implement len_trim and trim intrinsic #3674

• : Register intrinsics in fortran backend

  • : Array intrinsics Register array intrinsics in fortran backend #4036
  • : Elemental intrinsics Register intrinsic elemental functions in fortran backend #4054
  • : TypeInquiry intrinsics Deregister features from fortran backend which are not in use yet (for which no tests exist) #4083
  • generalise fortran backend for all intrinsic functions refactor: generalise fortran backend for all intrinsic functions #4134

• : Register intrinsics in c/cpp backend

• : Register intrinsics in julia backend

• Ensure tests exists for all intrinsics Implement all intrinsic functions #3067

• Performance options for intrinsics

• Other issues

  • Compile time reduction of kind fix: support compile time reduction of kind argument #4073
  • Logical type casting enh: support type conversion from Integer to logical #4042
  • Add test for selected_real_kind with digits Add integration test for selected_real_kind #4096