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DAMASK_EICMD
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handle case of -0.0 

-0.0 < 0.0 ! false
so need sign to change direction for also for the corner case of -0.0
This commit is contained in:
Martin Diehl 2022-01-15 12:28:39 +01:00
parent d1cd125a5b
commit a37178ddee
1 changed files with 7 additions and 7 deletions
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14
src/rotations.f90
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@ -270,7 +270,7 @@ pure elemental subroutine standardize(self)
class(rotation), intent(inout) :: self class(rotation), intent(inout) :: self
if (self%q(1) < 0.0_pReal) self%q = - self%q if (sign(1.0_pReal,self%q(1)) < 0.0_pReal) self%q = - self%q
end subroutine standardize end subroutine standardize
@ -450,7 +450,7 @@ pure function qu2om(qu) result(om)
om(3,2) = 2.0_pReal*(qu(4)*qu(3)+qu(1)*qu(2)) om(3,2) = 2.0_pReal*(qu(4)*qu(3)+qu(1)*qu(2))
om(1,3) = 2.0_pReal*(qu(2)*qu(4)+qu(1)*qu(3)) om(1,3) = 2.0_pReal*(qu(2)*qu(4)+qu(1)*qu(3))
if (P < 0.0_pReal) om = transpose(om) if (sign(1.0_pReal,P) < 0.0_pReal) om = transpose(om)
end function qu2om end function qu2om
@ -480,7 +480,7 @@ pure function qu2eu(qu) result(eu)
atan2( 2.0_pReal*chi, q03-q12 ), & atan2( 2.0_pReal*chi, q03-q12 ), &
atan2(( P*qu(1)*qu(3)+qu(2)*qu(4))*chi, (-P*qu(1)*qu(2)+qu(3)*qu(4))*chi )] atan2(( P*qu(1)*qu(3)+qu(2)*qu(4))*chi, (-P*qu(1)*qu(2)+qu(3)*qu(4))*chi )]
endif degenerated endif degenerated
where(eu<0.0_pReal) eu = mod(eu+2.0_pReal*PI,[2.0_pReal*PI,PI,2.0_pReal*PI]) where(sign(1.0_pReal,eu)<0.0_pReal) eu = mod(eu+2.0_pReal*PI,[2.0_pReal*PI,PI,2.0_pReal*PI])
end function qu2eu end function qu2eu
@ -602,7 +602,7 @@ pure function om2qu(om) result(qu)
qu = [ (om(2,1) - om(1,2)) /s,(om(1,3) + om(3,1)) / s,(om(2,3) + om(3,2)) / s,0.25_pReal * s] qu = [ (om(2,1) - om(1,2)) /s,(om(1,3) + om(3,1)) / s,(om(2,3) + om(3,2)) / s,0.25_pReal * s]
endif endif
endif endif
if(qu(1)<0._pReal) qu =-1.0_pReal * qu if(sign(1.0_pReal,qu(1))<0.0_pReal) qu =-1.0_pReal * qu
qu = qu*[1.0_pReal,P,P,P] qu = qu*[1.0_pReal,P,P,P]
end function om2qu end function om2qu
@ -628,7 +628,7 @@ pure function om2eu(om) result(eu)
eu = [atan2(om(1,2),om(1,1)), 0.5_pReal*PI*(1.0_pReal-om(3,3)),0.0_pReal ] eu = [atan2(om(1,2),om(1,1)), 0.5_pReal*PI*(1.0_pReal-om(3,3)),0.0_pReal ]
end if end if
where(abs(eu) < 1.e-8_pReal) eu = 0.0_pReal where(abs(eu) < 1.e-8_pReal) eu = 0.0_pReal
where(eu<0.0_pReal) eu = mod(eu+2.0_pReal*PI,[2.0_pReal*PI,PI,2.0_pReal*PI]) where(sign(1.0_pReal,eu)<0.0_pReal) eu = mod(eu+2.0_pReal*PI,[2.0_pReal*PI,PI,2.0_pReal*PI])
end function om2eu end function om2eu
@ -735,7 +735,7 @@ pure function eu2qu(eu) result(qu)
-P*sPhi*cos(ee(1)-ee(3)), & -P*sPhi*cos(ee(1)-ee(3)), &
-P*sPhi*sin(ee(1)-ee(3)), & -P*sPhi*sin(ee(1)-ee(3)), &
-P*cPhi*sin(ee(1)+ee(3))] -P*cPhi*sin(ee(1)+ee(3))]
if(qu(1) < 0.0_pReal) qu = qu * (-1.0_pReal) if(sign(1.0_pReal,qu(1)) < 0.0_pReal) qu = qu * (-1.0_pReal)
end function eu2qu end function eu2qu
@ -792,7 +792,7 @@ pure function eu2ax(eu) result(ax)
else else
ax(1:3) = -P/tau * [ t*cos(delta), t*sin(delta), sin(sigma) ] ! passive axis-angle pair so a minus sign in front ax(1:3) = -P/tau * [ t*cos(delta), t*sin(delta), sin(sigma) ] ! passive axis-angle pair so a minus sign in front
ax(4) = alpha ax(4) = alpha
if (alpha < 0.0_pReal) ax = -ax ! ensure alpha is positive if (sign(1.0_pReal,alpha) < 0.0_pReal) ax = -ax ! ensure alpha is positive
end if end if
end function eu2ax end function eu2ax