| {"text": "INTEGER FUNCTION euclid_sub(a, b)\n IMPLICIT NONE\n INTEGER, INTENT(INOUT) :: a, b\n\n\n a = ABS(a)\n b = ABS(b)\n\n DO WHILE (a /= b)\n \n IF (a > b) THEN\n a = a - b\n ELSE\n b = b - a\n END IF\n END DO\n\n euclid_sub = a\nEND FUNCTION euclid_sub \n\nINTEGER FUNCTION euclid_mod(a, b)\n IMPLICIT NONE\n INTEGER, INTENT(INOUT) :: a, b\n INTEGER :: temp\n\n\n DO WHILE (b > 0)\n temp = b\n b = MODULO(a,b)\n a = temp\n END DO\n\n euclid_mod = a\n\nEND FUNCTION euclid_mod\n\nPROGRAM euclidean\n \n IMPLICIT NONE\n INTEGER :: a, b, euclid_sub, euclid_mod, temp_a, temp_b, ioerror\n \n DO\n WRITE(*,*) 'Calculate greatest common divisor. Give two integers:'\n READ(*, '(i10)', iostat=ioerror) temp_a, temp_b\n \n IF (ioerror == 0) THEN\n EXIT\n END IF\n \n WRITE(*,*) 'Entered numbers are not integers. Try again.'\n END DO\n \n a = temp_a\n b = temp_b\n WRITE(*,*) 'Subtraction method: GCD is: ', euclid_sub(a, b)\n \n a = temp_a \n b = temp_b \n WRITE(*,*) 'Modulus method: GCD is: ', euclid_mod(a, b)\nEND PROGRAM euclidean \n", "meta": {"hexsha": "5efae952f4556423ded2121d4999805017480e23", "size": 1187, "ext": "f90", "lang": "FORTRAN", "max_stars_repo_path": "contents/euclidean_algorithm/code/fortran/interactive_euclidean.f90", "max_stars_repo_name": "atocil/algorithm-archive", "max_stars_repo_head_hexsha": "2eb30cb103508c9efb91621564bd3114eb49d3af", "max_stars_repo_licenses": ["MIT"], "max_stars_count": 1975, "max_stars_repo_stars_event_min_datetime": "2018-04-28T13:46:56.000Z", "max_stars_repo_stars_event_max_datetime": "2022-03-29T13:14:47.000Z", "max_issues_repo_path": "contents/euclidean_algorithm/code/fortran/interactive_euclidean.f90", "max_issues_repo_name": "atocil/algorithm-archive", "max_issues_repo_head_hexsha": "2eb30cb103508c9efb91621564bd3114eb49d3af", "max_issues_repo_licenses": ["MIT"], "max_issues_count": 632, "max_issues_repo_issues_event_min_datetime": "2018-04-28T10:27:13.000Z", "max_issues_repo_issues_event_max_datetime": "2022-03-28T20:38:53.000Z", "max_forks_repo_path": "contents/euclidean_algorithm/code/fortran/interactive_euclidean.f90", "max_forks_repo_name": "atocil/algorithm-archive", "max_forks_repo_head_hexsha": "2eb30cb103508c9efb91621564bd3114eb49d3af", "max_forks_repo_licenses": ["MIT"], "max_forks_count": 433, "max_forks_repo_forks_event_min_datetime": "2018-04-27T22:50:22.000Z", "max_forks_repo_forks_event_max_datetime": "2022-03-22T06:16:03.000Z", "avg_line_length": 19.4590163934, "max_line_length": 74, "alphanum_fraction": 0.5248525695, "num_tokens": 356, "lm_name": "Qwen/Qwen-72B", "lm_label": "1. YES\n2. YES", "lm_q1_score": 0.9674102580527664, "lm_q2_score": 0.9324533097989077, "lm_q1q2_score": 0.9020648970547174}} |
| {"text": "! Program : Exercise_16\n! Author : FortranFan\n! Reference : https://en.wikipedia.org/wiki/Gauss%27s_continued_fraction#cite_note-8\n!\n! Description:\n! An example implementation that illustrates how to employ a\n! RECURIVE function in Fortran to compute the tangent of x using\n! Lambert's continued fraction dating back to 1768 which gives\n! tan(x) = x/(1-x**2/(3-x**2/(5-x**2/(7-x**2/..))))\n!\n\nmodule kinds_m\n ! Returns the kind value of a real data type with decimal precision of at least P digits\n integer, parameter :: WP = selected_real_kind( p=12 ) ! Select suitable precision\nend module kinds_m\n\nmodule trig_m\n ! importing WP from kinds module\n use kinds_m, only: WP\n ! Named constants\n real(WP), parameter :: ONE = 1.0_wp\n real(WP), parameter :: TWO = 2.0_wp\n real(WP), parameter :: PI = 3.14159265358979323846264338327950288_wp\n real(WP), parameter :: DEG_TO_RAD = PI/180.0_wp\n real(WP), parameter :: TOL = 1e-3_wp !<-- Suitable tolerance for continued fraction series\n real(WP), parameter :: UPPER_LIMIT = ONE/TOL\n\ncontains\n elemental function tand(degx) result(tanx)\n ! Calculate tangent of x in degrees using Lambert's formula\n ! Argument list\n real(WP), intent(in) :: degx ! x in degrees\n ! Function result\n real(WP) :: tanx\n ! Local variables\n real(WP) :: x\n x = degx * DEG_TO_RAD\n tanx = x / ( ONE + CalcFracLambert(x, n = 1))\n return\n end function tand\n\n pure recursive function CalcFracLambert(x, n) result(Frac)\n ! Argument list\n real(WP), intent(in) :: x ! x in radians\n integer, intent(in) :: n\n ! Function result\n real(WP) :: Frac\n ! Local variables\n real(WP) :: Term\n Term = TWO*n + ONE\n if ( Term > UPPER_LIMIT ) then\n Frac = - x**2 / Term\n else\n Frac = - x**2 / ( Term + CalcFracLambert(x, n+1) )\n end if\n return\n end function CalcfracLambert\nend module trig_m\n\nprogram CalcTanx\n ! importing relevant modules\n use kinds_m, only: WP\n use trig_m, only: tand, DEG_TO_RAD\n ! declaring and initializing variables\n real(WP) :: degx, tanx\n degx = 40.0_wp\n ! Calcuating tan value\n tanx = tand(degx)\n ! printing results\n print *, \"x(degrees): \", degx\n print *, \"tan(x) using Lambert's formula: \", tanx\n print *, \"% diff with intrinsic tan: \", (tanx/tan(degx*DEG_TO_RAD)-1.0_wp)*100.0_wp\n stop\nend program CalcTanx\n", "meta": {"hexsha": "c25e671f1692b77d331a7b9e549f7f7edb9a84ee", "size": 2443, "ext": "f90", "lang": "FORTRAN", "max_stars_repo_path": "src/numerical methods/Exercise_16.f90", "max_stars_repo_name": "EverLookNeverSee/FCS", "max_stars_repo_head_hexsha": "aa69d069d14e8dc20a9d176014c8a6a6b99322d4", "max_stars_repo_licenses": ["MIT"], "max_stars_count": 2, "max_stars_repo_stars_event_min_datetime": "2020-04-14T10:30:25.000Z", "max_stars_repo_stars_event_max_datetime": "2020-04-17T13:03:15.000Z", "max_issues_repo_path": "src/numerical methods/Exercise_16.f90", "max_issues_repo_name": "EverLookNeverSee/FCS", "max_issues_repo_head_hexsha": "aa69d069d14e8dc20a9d176014c8a6a6b99322d4", "max_issues_repo_licenses": ["MIT"], "max_issues_count": 3, "max_issues_repo_issues_event_min_datetime": "2020-06-06T13:54:45.000Z", "max_issues_repo_issues_event_max_datetime": "2020-07-25T20:32:23.000Z", "max_forks_repo_path": "src/numerical methods/Exercise_16.f90", "max_forks_repo_name": "EverLookNeverSee/FCS", "max_forks_repo_head_hexsha": "aa69d069d14e8dc20a9d176014c8a6a6b99322d4", "max_forks_repo_licenses": ["MIT"], "max_forks_count": 1, "max_forks_repo_forks_event_min_datetime": "2020-06-08T12:57:46.000Z", "max_forks_repo_forks_event_max_datetime": "2020-06-08T12:57:46.000Z", "avg_line_length": 32.5733333333, "max_line_length": 94, "alphanum_fraction": 0.6446991404, "num_tokens": 728, "lm_name": "Qwen/Qwen-72B", "lm_label": "1. YES\n2. YES", "lm_q1_score": 0.9715639677785087, "lm_q2_score": 0.9284087960985615, "lm_q1q2_score": 0.9020085336579869}} |
