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| 1 | MODULE nrtype |
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| 2 | |
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| 3 | implicit none |
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| 4 | |
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| 5 | integer, parameter:: k8 = selected_real_kind(13) |
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| 6 | |
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| 7 | ! Frequently used mathematical constants (with precision to spare): |
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| 8 | |
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| 9 | REAL, PARAMETER :: PI=3.141592653589793238462643383279502884197 |
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| 10 | REAL, PARAMETER :: PIO2=1.57079632679489661923132169163975144209858 |
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| 11 | REAL, PARAMETER :: TWOPI=6.283185307179586476925286766559005768394 |
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| 12 | REAL, PARAMETER :: SQRT2=1.41421356237309504880168872420969807856967 |
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| 13 | REAL, PARAMETER :: EULER=0.5772156649015328606065120900824024310422 |
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| 14 | |
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| 15 | REAL(K8), PARAMETER:: & |
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| 16 | PI_D = 3.141592653589793238462643383279502884197_k8 |
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| 17 | REAL(K8), PARAMETER:: & |
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| 18 | PIO2_D=1.57079632679489661923132169163975144209858_k8 |
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| 19 | REAL(K8), PARAMETER:: & |
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| 20 | TWOPI_D=6.283185307179586476925286766559005768394_k8 |
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| 21 | |
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| 22 | END MODULE nrtype |
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