PENF bit/byte size functions.
!< PENF bit/byte size functions. module penf_b_size !< PENF bit/byte size functions. use penf_global_parameters_variables implicit none private save public :: bit_size, byte_size interface bit_size !< Overloading of the intrinsic *bit_size* function for computing the number of bits of (also) real and character variables. module procedure & #if defined _R16P bit_size_R16P, & #endif bit_size_R8P, & bit_size_R4P, & bit_size_chr endinterface interface byte_size !< Compute the number of bytes of a variable. module procedure & byte_size_I8P, & byte_size_I4P, & byte_size_I2P, & byte_size_I1P, & #if defined _R16P byte_size_R16P, & #endif byte_size_R8P, & byte_size_R4P, & byte_size_chr endinterface contains elemental function bit_size_R16P(i) result(bits) !< Compute the number of bits of a real variable. !< !<```fortran !< use penf !< print FI2P, bit_size(1._R16P) !<``` !=> 128 <<< real(R16P), intent(in) :: i !< Real variable whose number of bits must be computed. integer(I2P) :: bits !< Number of bits of r. integer(I1P) :: mold(1) !< "Molding" dummy variable for bits counting. bits = size(transfer(i, mold), dim=1, kind=I2P) * 8_I2P endfunction bit_size_R16P elemental function bit_size_R8P(i) result(bits) !< Compute the number of bits of a real variable. !< !<```fortran !< use penf !< print FI1P, bit_size(1._R8P) !<``` !=> 64 <<< real(R8P), intent(in) :: i !< Real variable whose number of bits must be computed. integer(I1P) :: bits !< Number of bits of r. integer(I1P) :: mold(1) !< "Molding" dummy variable for bits counting. bits = size(transfer(i, mold), dim=1, kind=I1P) * 8_I1P endfunction bit_size_R8P elemental function bit_size_R4P(i) result(bits) !< Compute the number of bits of a real variable. !< !<```fortran !< use penf !< print FI1P, bit_size(1._R4P) !<``` !=> 32 <<< real(R4P), intent(in) :: i !< Real variable whose number of bits must be computed. integer(I1P) :: bits !< Number of bits of r. integer(I1P) :: mold(1) !< "Molding" dummy variable for bits counting. bits = size(transfer(i, mold), dim=1, kind=I1P) * 8_I1P endfunction bit_size_R4P elemental function bit_size_chr(i) result(bits) !< Compute the number of bits of a character variable. !< !<```fortran !< use penf !< print FI4P, bit_size('ab') !<``` !=> 16 <<< character(*), intent(IN) :: i !< Character variable whose number of bits must be computed. integer(I4P) :: bits !< Number of bits of c. integer(I1P) :: mold(1) !< "Molding" dummy variable for bits counting. bits = size(transfer(i, mold), dim=1, kind=I4P) * 8_I4P endfunction bit_size_chr elemental function byte_size_R16P(i) result(bytes) !< Compute the number of bytes of a real variable. !< !<```fortran !< use penf !< print FI1P, byte_size(1._R16P) !<``` !=> 16 <<< real(R16P), intent(in) :: i !< Real variable whose number of bytes must be computed. integer(I1P) :: bytes !< Number of bytes of r. bytes = bit_size(i) / 8_I1P endfunction byte_size_R16P elemental function byte_size_R8P(i) result(bytes) !< Compute the number of bytes of a real variable. !< !<```fortran !< use penf !< print FI1P, byte_size(1._R8P) !<``` !=> 8 <<< real(R8P), intent(in) :: i !< Real variable whose number of bytes must be computed. integer(I1P) :: bytes !< Number of bytes of r. bytes = bit_size(i) / 8_I1P endfunction byte_size_R8P elemental function byte_size_R4P(i) result(bytes) !< Compute the number of bytes of a real variable. !< !<```fortran !< use penf !< print FI1P, byte_size(1._R4P) !<``` !=> 4 <<< real(R4P), intent(in) :: i !< Real variable whose number of bytes must be computed. integer(I1P) :: bytes !< Number of bytes of r. bytes = bit_size(i) / 8_I1P endfunction byte_size_R4P elemental function byte_size_chr(i) result(bytes) !< Compute the number of bytes of a character variable. !< !<```fortran !< use penf !< print FI1P, byte_size('ab') !<``` !=> 2 <<< character(*), intent(in) :: i !< Character variable whose number of bytes must be computed. integer(I4P) :: bytes !< Number of bytes of c. bytes = bit_size(i) / 8_I4P endfunction byte_size_chr elemental function byte_size_I8P(i) result(bytes) !< Compute the number of bytes of an integer variable. !< !<```fortran !< use penf !< print FI1P, byte_size(1_I8P) !<``` !=> 8 <<< integer(I8P), intent(in) :: i !< Integer variable whose number of bytes must be computed. integer(I1P) :: bytes !< Number of bytes of i. bytes = bit_size(i) / 8_I1P endfunction byte_size_I8P elemental function byte_size_I4P(i) result(bytes) !< Compute the number of bytes of an integer variable. !< !<```fortran !< use penf !< print FI1P, byte_size(1_I4P) !<``` !=> 4 <<< integer(I4P), intent(in) :: i !< Integer variable whose number of bytes must be computed. integer(I1P) :: bytes !< Number of bytes of i. bytes = bit_size(i) / 8_I1P endfunction byte_size_I4P elemental function byte_size_I2P(i) result(bytes) !< Compute the number of bytes of an integer variable. !< !<```fortran !< use penf !< print FI1P, byte_size(1_I2P) !<``` !=> 2 <<< integer(I2P), intent(in) :: i !< Integer variable whose number of bytes must be computed. integer(I1P) :: bytes !< Number of bytes of i. bytes = bit_size(i) / 8_I1P endfunction byte_size_I2P elemental function byte_size_I1P(i) result(bytes) !< Compute the number of bytes of an integer variable. !< !<```fortran !< use penf !< print FI1P, byte_size(1_I1P) !<``` !=> 1 <<< integer(I1P), intent(in) :: i !< Integer variable whose number of bytes must be computed. integer(I1P) :: bytes !< Number of bytes of i. bytes = bit_size(i) / 8_I1P endfunction byte_size_I1P endmodule penf_b_size