| 1 |
module fxhyp_loop_ik_m |
| 2 |
|
| 3 |
implicit none |
| 4 |
|
| 5 |
INTEGER, PARAMETER:: nmax = 30000 |
| 6 |
|
| 7 |
contains |
| 8 |
|
| 9 |
subroutine fxhyp_loop_ik(ik, decalx, xf, xtild, Xprimt, xzoom, xlon, & |
| 10 |
xprimm, xuv) |
| 11 |
|
| 12 |
use coefpoly_m, only: coefpoly |
| 13 |
USE dimens_m, ONLY: iim |
| 14 |
use nr_util, only: pi_d, twopi_d, twopi |
| 15 |
use serre, only: grossismx |
| 16 |
|
| 17 |
INTEGER, intent(in):: ik |
| 18 |
DOUBLE PRECISION, intent(in):: decalx |
| 19 |
DOUBLE PRECISION, intent(in):: Xf(0:), xtild(0:), Xprimt(0:) ! (0:2 * nmax) |
| 20 |
DOUBLE PRECISION, intent(in):: xzoom |
| 21 |
real, intent(out):: xlon(:), xprimm(:) ! (iim + 1) |
| 22 |
|
| 23 |
DOUBLE PRECISION, intent(in):: xuv |
| 24 |
! 0. si calcul aux points scalaires |
| 25 |
! 0.5 si calcul aux points U |
| 26 |
|
| 27 |
! Local: |
| 28 |
|
| 29 |
DOUBLE PRECISION xo1, Xfi, xi, a0, a1, a2, a3, Xf1, Xprimin |
| 30 |
integer ii1, ii2, i, it, iter, idif, ii |
| 31 |
DOUBLE PRECISION, parameter:: my_eps = 1e-6 |
| 32 |
DOUBLE PRECISION xxprim(iim + 1), xvrai(iim + 1) |
| 33 |
INTEGER:: is2 = 0 |
| 34 |
|
| 35 |
!------------------------------------------------------------------ |
| 36 |
|
| 37 |
IF (ik == 1 .and. grossismx == 1.) THEN |
| 38 |
ii1 = 2 |
| 39 |
ii2 = iim + 1 |
| 40 |
else |
| 41 |
ii1=1 |
| 42 |
ii2=iim |
| 43 |
END IF |
| 44 |
|
| 45 |
DO i = ii1, ii2 |
| 46 |
Xfi = - pi_d + (i + xuv - decalx) * twopi_d / iim |
| 47 |
|
| 48 |
it = 2 * nmax |
| 49 |
do while (xfi < xf(it) .and. it >= 1) |
| 50 |
it = it - 1 |
| 51 |
end do |
| 52 |
|
| 53 |
! Calcul de Xf(xi) |
| 54 |
|
| 55 |
xi = xtild(it) |
| 56 |
|
| 57 |
IF (it == 2 * nmax) THEN |
| 58 |
it = 2 * nmax -1 |
| 59 |
END IF |
| 60 |
|
| 61 |
CALL coefpoly(Xf(it), Xf(it + 1), Xprimt(it), Xprimt(it + 1), & |
| 62 |
xtild(it), xtild(it + 1), a0, a1, a2, a3) |
| 63 |
Xf1 = Xf(it) |
| 64 |
Xprimin = a1 + xi * (2d0 * a2 + xi * 3d0 * a3) |
| 65 |
xo1 = xi |
| 66 |
iter = 1 |
| 67 |
|
| 68 |
do |
| 69 |
xi = xi - (Xf1 - Xfi) / Xprimin |
| 70 |
IF (ABS(xi - xo1) <= my_eps .or. iter == 300) exit |
| 71 |
xo1 = xi |
| 72 |
Xf1 = a0 + xi * (a1 + xi * (a2 + xi * a3)) |
| 73 |
Xprimin = a1 + xi * (2d0 * a2 + xi * 3d0 * a3) |
| 74 |
end DO |
| 75 |
|
| 76 |
if (ABS(xi - xo1) > my_eps) then |
| 77 |
! iter == 300 |
| 78 |
print *, 'Pas de solution.' |
| 79 |
print *, i, xfi |
| 80 |
STOP 1 |
| 81 |
end if |
| 82 |
|
| 83 |
xxprim(i) = twopi_d / (REAL(iim) * Xprimin) |
| 84 |
xvrai(i) = xi + xzoom |
| 85 |
end DO |
| 86 |
|
| 87 |
IF (ik == 1 .and. grossismx == 1.) THEN |
| 88 |
xvrai(1) = xvrai(iim + 1)-twopi_d |
| 89 |
xxprim(1) = xxprim(iim + 1) |
| 90 |
END IF |
| 91 |
|
| 92 |
DO i = 1, iim |
| 93 |
xlon(i) = xvrai(i) |
| 94 |
xprimm(i) = xxprim(i) |
| 95 |
END DO |
| 96 |
|
| 97 |
DO i = 1, iim -1 |
| 98 |
IF (xvrai(i + 1) < xvrai(i)) THEN |
| 99 |
print *, 'rlonu(', i + 1, ') < rlonu(', i, ')' |
| 100 |
STOP 1 |
| 101 |
END IF |
| 102 |
END DO |
| 103 |
|
| 104 |
IF (ik == 1 .and. (MINval(xvrai(:iim)) < - pi_d - 0.1d0 & |
| 105 |
.or. MAXval(xvrai(:iim)) > pi_d + 0.1d0)) THEN |
| 106 |
IF (xzoom <= 0.) THEN |
| 107 |
i = 1 |
| 108 |
|
| 109 |
do while (xvrai(i) < - pi_d .and. i < iim) |
| 110 |
i = i + 1 |
| 111 |
end do |
| 112 |
|
| 113 |
if (xvrai(i) < - pi_d) then |
| 114 |
print *, 'Xvrai plus petit que - pi !' |
| 115 |
STOP 1 |
| 116 |
end if |
| 117 |
|
| 118 |
is2 = i |
| 119 |
ELSE |
| 120 |
i = iim |
| 121 |
|
| 122 |
do while (xvrai(i) > pi_d .and. i > 1) |
| 123 |
i = i - 1 |
| 124 |
end do |
| 125 |
|
| 126 |
if (xvrai(i) > pi_d) then |
| 127 |
print *, 'Xvrai plus grand que pi !' |
| 128 |
STOP 1 |
| 129 |
end if |
| 130 |
|
| 131 |
is2 = i |
| 132 |
END IF |
| 133 |
END IF |
| 134 |
|
| 135 |
if (is2 /= 0) then |
| 136 |
IF (xzoom <= 0.) THEN |
| 137 |
IF (is2 /= 1) THEN |
| 138 |
DO ii = is2, iim |
| 139 |
xlon(ii-is2 + 1) = xvrai(ii) |
| 140 |
xprimm(ii-is2 + 1) = xxprim(ii) |
| 141 |
END DO |
| 142 |
DO ii = 1, is2 -1 |
| 143 |
xlon(ii + iim-is2 + 1) = xvrai(ii) + twopi_d |
| 144 |
xprimm(ii + iim-is2 + 1) = xxprim(ii) |
| 145 |
END DO |
| 146 |
END IF |
| 147 |
else |
| 148 |
idif = iim -is2 |
| 149 |
|
| 150 |
DO ii = 1, is2 |
| 151 |
xlon(ii + idif) = xvrai(ii) |
| 152 |
xprimm(ii + idif) = xxprim(ii) |
| 153 |
END DO |
| 154 |
|
| 155 |
DO ii = 1, idif |
| 156 |
xlon(ii) = xvrai(ii + is2) - twopi_d |
| 157 |
xprimm(ii) = xxprim(ii + is2) |
| 158 |
END DO |
| 159 |
end IF |
| 160 |
end if |
| 161 |
|
| 162 |
xlon(iim + 1) = xlon(1) + twopi |
| 163 |
xprimm(iim + 1) = xprimm(1) |
| 164 |
|
| 165 |
end subroutine fxhyp_loop_ik |
| 166 |
|
| 167 |
end module fxhyp_loop_ik_m |
Parent Directory
| 
Revision Log