utils.f90 3.86 KB
 Luca committed Apr 02, 2019 1 2 3 `````` ! Contains some functions that might be useful later `````` Luca committed Apr 03, 2019 4 5 6 7 8 9 ``````! Write your own print function with ability to suppress print ! Muss immer alle prints und warnings ausschalten können ! Test Programm schreiben mit exit codes -> gfortran 'test.f90' und dann 'echo \$?' ! Define GPL infinity ! Mach n optional ! Kommentar schreiben zu anderer Notation `````` Luca committed Apr 03, 2019 10 ``````! Funktion überprüfen! Tests schreiben! `````` Luca committed Apr 03, 2019 11 `````` `````` Luca committed Apr 02, 2019 12 13 ``````MODULE utils implicit none `````` Luca committed Apr 25, 2019 14 `````` integer, parameter :: prec = selected_real_kind(15,32) `````` 15 `````` real :: zero = 1e-15 `````` Luca committed Apr 25, 2019 16 17 `````` ! logical :: print_enabled = .true. ! logical :: warnings_enabled = .true. `````` Luca committed Apr 03, 2019 18 `````` `````` Luca committed Apr 02, 2019 19 ``````CONTAINS `````` Luca committed Apr 25, 2019 20 21 22 `````` FUNCTION get_condensed_m(z) result(m) ! returns condensed m where the ones not needed are filled with 0 `````` 23 24 `````` complex(kind=prec), intent(in) :: z(:) integer :: m(size(z)), pos, i `````` Luca committed Apr 25, 2019 25 `````` m = 1 `````` 26 `````` pos = 1 `````` Luca committed Apr 25, 2019 27 `````` do i = 1,size(z) `````` 28 `````` if(abs(z(i)) < zero) then `````` Luca committed Apr 25, 2019 29 30 31 32 33 34 35 36 37 38 39 40 `````` if(i == size(z)) then pos = pos + 1 else m(pos) = m(pos) + 1 end if else pos = pos + 1 end if end do m(pos:) = 0 END FUNCTION get_condensed_m `````` Luca committed Apr 25, 2019 41 `````` FUNCTION get_condensed_z(m, z_in) result(z_out) `````` Luca committed Apr 25, 2019 42 43 44 45 46 47 48 49 `````` ! returns condensed z vector integer :: m(:), i, pos complex(kind=prec) :: z_in(:), z_out(size(m)) pos = 0 do i=1,size(m) pos = pos + m(i) z_out(i) = z_in(pos) end do `````` Luca committed Apr 25, 2019 50 `````` END FUNCTION get_condensed_z `````` Luca committed Apr 25, 2019 51 52 53 54 55 56 57 58 59 60 61 62 63 `````` FUNCTION get_flattened_z(m,z_in) result(z_out) ! returns flattened version of z based on m and z integer :: m(:), i, pos complex(kind=prec) :: z_in(:), z_out(sum(m)) z_out = 0 pos = 0 do i=1,size(m) pos = pos + m(i) z_out(pos) = z_in(i) end do END FUNCTION get_flattened_z `````` Luca Naterop committed Apr 29, 2019 64 65 66 67 68 `````` FUNCTION find_amount_trailing_zeros(z) result(res) complex(kind=prec) :: z(:) integer :: res, i res = 0 do i = size(z), 1, -1 `````` 69 `````` if( abs(z(i)) < zero ) then `````` Luca Naterop committed Apr 29, 2019 70 71 72 73 74 75 76 `````` res = res + 1 else exit end if end do END FUNCTION find_amount_trailing_zeros `````` Luca committed Apr 25, 2019 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 `````` FUNCTION find_first_zero(v) result(res) ! returns index of first zero, or -1 if there is no zero integer :: v(:), i, res res = -1 do i = 1,size(v) if(v(i) == 0) then res = i return end if end do END FUNCTION find_first_zero SUBROUTINE print_as_matrix(m) ! prints a 2d array as a matrix complex :: m(:,:) integer :: s(2), i s = shape(m) do i = 1,s(1) `````` 95 `````` print*, abs(m(i,:)) `````` Luca committed Apr 25, 2019 96 97 98 `````` end do END SUBROUTINE print_as_matrix `````` 99 100 101 102 103 104 `````` FUNCTION zero_array(n) result(res) integer :: n complex(kind=prec) :: res(n) res = 0 END FUNCTION zero_array `````` Luca committed Apr 25, 2019 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 `````` FUNCTION shuffle_with_zero(a) result(res) ! rows of result are shuffles of a with 0 complex :: a(:) complex :: res(size(a)+1,size(a)+1) integer :: i,j, N N = size(a)+1 do i = 1,N ! i is the index of the row ! j is the index of the zero j = N+1-i res(i,j) = 0 res(i,1:j-1) = a(1:j-1) res(i,j+1:N) = a(j:) end do END FUNCTION shuffle_with_zero ! subroutine print(s1,s2,s3,s4,s5) ! character(len = *), intent(in), optional :: s1, s2, s3, s4, s5 ! if(print_enabled) then ! print*, s1, s2, s3, s4, s5 ! end if ! end subroutine print ! subroutine warn(s1,s2,s3,s4,s5) ! character(len = *), intent(in), optional :: s1, s2, s3, s4, s5 ! if(warnings_enabled) then ! print*, 'Warning: ', s1, s2, s3, s4, s5 ! end if ! end subroutine warn `````` Luca committed Apr 02, 2019 134 135 136 `````` END MODULE utils `````` Luca committed Apr 25, 2019 137 138 139 ``````! PROGRAM test ! use utils ! implicit none `````` 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 `````` ! complex(kind=prec) :: z(4) ! integer :: m_prime(4), condensed_size ! z = cmplx((/0.0,1.7,0.0,0.0/)) ! ! transform to condensed notation ! m_prime = get_condensed_m(z) ! print*, abs(z) ! m_prime = get_condensed_m(z) ! print*, abs(z) ! if(find_first_zero(m_prime) == -1) then ! condensed_size = size(m_prime) ! else ! condensed_size = find_first_zero(m_prime)-1 ! end if ! print*, condensed_size `````` Luca committed Apr 25, 2019 156 157 `````` ! END PROGRAM test``````