Generate and return .true. if the input array is sorted in descending order (with the possibility of elements being equal), otherwise, generate and return .false.. More...

Detailed Description

Generate and return .true. if the input array is sorted in descending order (with the possibility of elements being equal), otherwise, generate and return .false..

Parameters

[in]

array

: The input contiguous array of rank 1 of either

type css_pdt or,
type css_type or,
type character of kind any supported by the processor (e.g., SK, SKA, SKD , or SKU) of arbitrary length type parameter or,
type integer of kind any supported by the processor (e.g., IK, IK8, IK16, IK32, or IK64) or,
type logical of kind any supported by the processor (e.g., LK) or,
type complex of kind any supported by the processor (e.g., CK, CK32, CK64, or CK128) or,
type real of kind any supported by the processor (e.g., RK, RK32, RK64, or RK128) or,

or,

a scalar of type character of kind any supported by the processor (e.g., SK, SKA, SKD , or SKU) of arbitrary length type parameter,

whose elements will be checked for an all descending order
(with the possibility of elements being equal).

Returns: sorted : An output logical of default kind LK that is .true. if all elements of the input array are in descending order (with the possibility of elements being equal) or all equal. Otherwise, it is .false..

Possible calling interfaces ⛓

: use pm_arraySort, only: isDescending

descending = isDescending(array)

pm_arraySort::isDescending
Generate and return .true. if the input array is sorted in descending order (with the possibility of ...
Definition: pm_arraySort.F90:1724

pm_arraySort
This module contains procedures and generic interfaces for various sorting tasks.
Definition: pm_arraySort.F90:89

Warning: The output of this procedure is .true. when the input array has zero length.; The pure procedure(s) documented herein become impure when the ParaMonte library is compiled with preprocessor macro CHECK_ENABLED=1.
By default, these procedures are pure in release build and impure in debug and testing builds.

See also: isSorted
isAscending
setSorted
setSorted

Example usage ⛓

: 1program example

2

3 use pm_kind, only: SK, IK, LK ! all intrinsic types and kinds are supported.

4 use pm_arraySort, only: isDescending

5 use pm_io, only: display_type

6

7 implicit none

8

9 type(display_type) :: disp

10

11 disp = display_type(file = "main.out.F90")

12

13 call disp%skip()

14 call disp%show("isDescending('')")

15 call disp%show( isDescending('') )

16 call disp%skip()

17 call disp%show("isDescending('?Aa')")

18 call disp%show( isDescending('?Aa') )

19 call disp%skip()

20 call disp%show("isDescending('A!b')")

21 call disp%show( isDescending('A!b') )

22 call disp%skip()

23 call disp%show("isDescending('zxw')")

24 call disp%show( isDescending('zxw') )

25 call disp%skip()

26 call disp%show("isDescending('AAA')")

27 call disp%show( isDescending('AAA') )

28 call disp%skip()

29

30 call disp%skip()

31 call disp%show("isDescending([character(0) ::])")

32 call disp%show( isDescending([character(0) ::]) )

33 call disp%skip()

34 call disp%show("isDescending(['?', 'A', 'a'])")

35 call disp%show( isDescending(['?', 'A', 'a']) )

36 call disp%skip()

37 call disp%show("isDescending(['A', '!', 'b'])")

38 call disp%show( isDescending(['A', '!', 'b']) )

39 call disp%skip()

40 call disp%show("isDescending(['z', 'x', 'w'])")

41 call disp%show( isDescending(['z', 'x', 'w']) )

42 call disp%skip()

43 call disp%show("isDescending(['A', 'A', 'A'])")

44 call disp%show( isDescending(['A', 'A', 'A']) )

45 call disp%skip()

46

47 call disp%skip()

48 call disp%show("isDescending([integer ::])")

49 call disp%show( isDescending([integer ::]) )

50 call disp%skip()

51 call disp%show("isDescending([+1, +2, +3])")

52 call disp%show( isDescending([+1, +2, +3]) )

53 call disp%skip()

54 call disp%show("isDescending([-1, -2, -3])")

55 call disp%show( isDescending([-1, -2, -3]) )

56 call disp%skip()

57 call disp%show("isDescending([-1, +2, -3])")

58 call disp%show( isDescending([-1, +2, -3]) )

59 call disp%skip()

60 call disp%show("isDescending([-1, -1, -1])")

61 call disp%show( isDescending([-1, -1, -1]) )

62 call disp%skip()

63

64 call disp%skip()

65 call disp%show("isDescending([logical ::])")

66 call disp%show( isDescending([logical ::]) )

67 call disp%skip()

68 call disp%show("isDescending([.false., .false., .true.])")

69 call disp%show( isDescending([.false., .false., .true.]) )

70 call disp%skip()

71 call disp%show("isDescending([.true., .false., .false.])")

72 call disp%show( isDescending([.true., .false., .false.]) )

73 call disp%skip()

74 call disp%show("isDescending([.false., .true., .false.])")

75 call disp%show( isDescending([.false., .true., .false.]) )

76 call disp%skip()

77 call disp%show("isDescending([.true., .true., .true.])")

78 call disp%show( isDescending([.true., .true., .true.]) )

79 call disp%skip()

80

81 call disp%skip()

82 call disp%show("isDescending([complex ::])")

83 call disp%show( isDescending([complex ::]) )

84 call disp%skip()

85 call disp%show("isDescending([(+1., -1.), (+2., -2.), (+3., -3.)])")

86 call disp%show( isDescending([(+1., -1.), (+2., -2.), (+3., -3.)]) )

87 call disp%skip()

88 call disp%show("isDescending([(-1., +1.), (-2., +2.), (-3., +3.)])")

89 call disp%show( isDescending([(-1., +1.), (-2., +2.), (-3., +3.)]) )

90 call disp%skip()

91 call disp%show("isDescending([(-1., +1.), (+2., -2.), (-3., +3.)])")

92 call disp%show( isDescending([(-1., +1.), (+2., -2.), (-3., +3.)]) )

93 call disp%skip()

94 call disp%show("isDescending([(-1., +1.), (-1., +1.), (-1., +1.)])")

95 call disp%show( isDescending([(-1., +1.), (-1., +1.), (-1., +1.)]) )

96 call disp%skip()

97 call disp%show("isDescending([(-1., +1.), (-1., -2.), (-1., +3.)])")

98 call disp%show( isDescending([(-1., +1.), (-1., -2.), (-1., +3.)]) )

99 call disp%skip()

100

101 call disp%skip()

102 call disp%show("isDescending([real ::])")

103 call disp%show( isDescending([real ::]) )

104 call disp%skip()

105 call disp%show("isDescending([+1., +2., +3.])")

106 call disp%show( isDescending([+1., +2., +3.]) )

107 call disp%skip()

108 call disp%show("isDescending([-1., -2., -3.])")

109 call disp%show( isDescending([-1., -2., -3.]) )

110 call disp%skip()

111 call disp%show("isDescending([-1., +2., -3.])")

112 call disp%show( isDescending([-1., +2., -3.]) )

113 call disp%skip()

114 call disp%show("isDescending([-1., -1., -1.])")

115 call disp%show( isDescending([-1., -1., -1.]) )

116 call disp%skip()

117

118#if PDT_ENABLED

119 ! \bug

120 ! Intel ifort 2022.3 cannot handle aliases for pdt names (e.g., strc => css_pdt).

121 block

122 use pm_container, only: css_pdt

123 call disp%skip()

124 call disp%show("isDescending([css_pdt('is'), css_pdt( 'sorted'), css_pdt('string')])")

125 call disp%show( isDescending([css_pdt('is'), css_pdt( 'sorted'), css_pdt('string')]) )

126 call disp%skip()

127 call disp%show("isDescending([css_pdt('string'), css_pdt('is'), css_pdt('sorted')])")

128 call disp%show( isDescending([css_pdt('string'), css_pdt('is'), css_pdt('sorted')]) )

129 call disp%skip()

130 call disp%show("isDescending([css_pdt('same string'), css_pdt('same '), css_pdt('same')])")

131 call disp%show( isDescending([css_pdt('same string'), css_pdt('same '), css_pdt('same')]) )

132 call disp%skip()

133 end block

134#endif

135

136end program example

pm_io::show
This is a generic method of the derived type display_type with pass attribute.
Definition: pm_io.F90:11726

pm_io::skip
This is a generic method of the derived type display_type with pass attribute.
Definition: pm_io.F90:11508

pm_container
This module contains the derived types for generating allocatable containers of scalar,...
Definition: pm_container.F90:113

pm_io
This module contains classes and procedures for input/output (IO) or generic display operations on st...
Definition: pm_io.F90:252

pm_io::disp
type(display_type) disp
This is a scalar module variable an object of type display_type for general display.
Definition: pm_io.F90:11393

pm_kind
This module defines the relevant Fortran kind type-parameters frequently used in the ParaMonte librar...
Definition: pm_kind.F90:268

pm_kind::LK
integer, parameter LK
The default logical kind in the ParaMonte library: kind(.true.) in Fortran, kind(....
Definition: pm_kind.F90:541

pm_kind::IK
integer, parameter IK
The default integer kind in the ParaMonte library: int32 in Fortran, c_int32_t in C-Fortran Interoper...
Definition: pm_kind.F90:540

pm_kind::SK
integer, parameter SK
The default character kind in the ParaMonte library: kind("a") in Fortran, c_char in C-Fortran Intero...
Definition: pm_kind.F90:539

pm_container::css_pdt
This is the css_pdt parameterized type for generating instances of container of scalar of string obje...
Definition: pm_container.F90:783

pm_io::display_type
Generate and return an object of type display_type.
Definition: pm_io.F90:10282

Example Unix compile command via Intel ifort compiler ⛓
1#!/usr/bin/env sh

2rm main.exe

3ifort -fpp -standard-semantics -O3 -Wl,-rpath,../../../lib -I../../../inc main.F90 ../../../lib/libparamonte* -o main.exe

4./main.exe

Example Windows Batch compile command via Intel ifort compiler ⛓
1del main.exe

2set PATH=..\..\..\lib;%PATH%

3ifort /fpp /standard-semantics /O3 /I:..\..\..\include main.F90 ..\..\..\lib\libparamonte*.lib /exe:main.exe

4main.exe

Example Unix / MinGW compile command via GNU gfortran compiler ⛓
1#!/usr/bin/env sh

2rm main.exe

3gfortran -cpp -ffree-line-length-none -O3 -Wl,-rpath,../../../lib -I../../../inc main.F90 ../../../lib/libparamonte* -o main.exe

4./main.exe

Example output ⛓
1

2isDescending('')

3T

4

5isDescending('?Aa')

6F

7

8isDescending('A!b')

9F

10

11isDescending('zxw')

12T

13

14isDescending('AAA')

15T

16

17

18isDescending([character(0) ::])

19T

20

21isDescending(['?', 'A', 'a'])

22F

23

24isDescending(['A', '!', 'b'])

25F

26

27isDescending(['z', 'x', 'w'])

28T

29

30isDescending(['A', 'A', 'A'])

31T

32

33

34isDescending([integer ::])

35T

36

37isDescending([+1, +2, +3])

38F

39

40isDescending([-1, -2, -3])

41T

42

43isDescending([-1, +2, -3])

44F

45

46isDescending([-1, -1, -1])

47T

48

49

50isDescending([logical ::])

51T

52

53isDescending([.false., .false., .true.])

54F

55

56isDescending([.true., .false., .false.])

57T

58

59isDescending([.false., .true., .false.])

60F

61

62isDescending([.true., .true., .true.])

63T

64

65

66isDescending([complex ::])

67T

68

69isDescending([(+1., -1.), (+2., -2.), (+3., -3.)])

70F

71

72isDescending([(-1., +1.), (-2., +2.), (-3., +3.)])

73T

74

75isDescending([(-1., +1.), (+2., -2.), (-3., +3.)])

76F

77

78isDescending([(-1., +1.), (-1., +1.), (-1., +1.)])

79T

80

81isDescending([(-1., +1.), (-1., -2.), (-1., +3.)])

82T

83

84

85isDescending([real ::])

86T

87

88isDescending([+1., +2., +3.])

89F

90

91isDescending([-1., -2., -3.])

92T

93

94isDescending([-1., +2., -3.])

95F

96

97isDescending([-1., -1., -1.])

98T

99

100

Test:: test_pm_arraySort

Final Remarks ⛓

If you believe this algorithm or its documentation can be improved, we appreciate your contribution and help to edit this page's documentation and source file on GitHub.
For details on the naming abbreviations, see this page.
For details on the naming conventions, see this page.
This software is distributed under the MIT license with additional terms outlined below.

If you use any parts or concepts from this library to any extent, please acknowledge the usage by citing the relevant publications of the ParaMonte library.
If you regenerate any parts/ideas from this library in a programming environment other than those currently supported by this ParaMonte library (i.e., other than C, C++, Fortran, MATLAB, Python, R), please also ask the end users to cite this original ParaMonte library.

This software is available to the public under a highly permissive license.
Help us justify its continued development and maintenance by acknowledging its benefit to society, distributing it, and contributing to it.

Copyright: Computational Data Science Lab

Author:: Amir Shahmoradi, April 21, 2017, 3:54 AM, Institute for Computational Engineering and Sciences (ICES), The University of Texas Austin

Definition at line 1724 of file pm_arraySort.F90.

The documentation for this interface was generated from the following file:

src/fortran/main/pm_arraySort.F90