diff --git a/brem.f b/brem.f
index 018f5fc4..b3a5b6eb 100644
--- a/brem.f
+++ b/brem.f
@@ -61,19 +61,19 @@ real*8 function brem(ein,eout,egamma,radiate_proton,bsoft,bhard,dbsoft)
 
 ! direct initial electron
 
-	aprod= 1.d0
+	aprod= 1.e0
 	bei= aprod*(-1./(2.*pi))*log(ak/de)
 	dbei= aprod*(1./(2.*pi*de))
 
 ! direct final electron
 
-	aprod= 1.d0
+	aprod= 1.e0
 	bef= aprod*(-1./(2.*pi))*log(akp/de)
 	dbef= aprod*(1./(2.*pi*de))
 
 ! e-e interference
 
-	aprod= -1.d0
+	aprod= -1.e0
 	adot= ak*akp*(1.-cos(eang))
 	alpha= 2.*ame**2-2.*adot
 	ar1= 0.5+sqrt(adot**2-ame**4)/alpha
@@ -89,19 +89,19 @@ real*8 function brem(ein,eout,egamma,radiate_proton,bsoft,bhard,dbsoft)
 
 ! initial p direct
 
-	  aprod= 1.d0
+	  aprod= 1.e0
 	  bpi= aprod*(-1./(2.*pi))*log(am/de)
 	  dbpi= aprod*(1./(2.*pi*de))
 
 ! final p direct
 
-	  aprod= 1.d0
+	  aprod= 1.e0
 	  bpf= aprod*(-1./(2.*pi))*log(ape/de)
 	  dbpf= aprod*(1/(2.*pi*de))
 
 ! p-p interference
 
-	  aprod= -1.d0
+	  aprod= -1.e0
 	  adot= am*ape
 	  alpha= 2.*am**2-2.*adot
 	  ar1= 0.5+sqrt(adot**2-am**4)/alpha
@@ -113,7 +113,7 @@ real*8 function brem(ein,eout,egamma,radiate_proton,bsoft,bhard,dbsoft)
 
 ! ei-pi interference
 
-	  aprod= -1.d0
+	  aprod= -1.e0
 	  adot= ak*am
 	  alpha= am**2+ame**2-2.*adot
 	  ar1= (am**2-adot+sqrt(adot**2-(ame*am)**2))/alpha
@@ -125,7 +125,7 @@ real*8 function brem(ein,eout,egamma,radiate_proton,bsoft,bhard,dbsoft)
 
 ! ef-pf interference
 
-	  aprod= -1.d0
+	  aprod= -1.e0
 	  adot= akp*ape-akp*ap*cos(eang+pang)
 	  alpha= am**2+ame**2-2.*adot
 	  ar1= (am**2-adot+sqrt(adot**2-(ame*am)**2))/alpha
@@ -137,7 +137,7 @@ real*8 function brem(ein,eout,egamma,radiate_proton,bsoft,bhard,dbsoft)
 
 !     ei-pf interference
 
-	  aprod= 1.d0
+	  aprod= 1.e0
 	  adot= ak*ape-ak*ap*cos(pang)
 	  alpha= am**2+ame**2-2.*adot
 	  ar1= (am**2-adot+sqrt(adot**2-(ame*am)**2))/alpha
@@ -149,7 +149,7 @@ real*8 function brem(ein,eout,egamma,radiate_proton,bsoft,bhard,dbsoft)
 
 !     ef-pi interference
 
-	  aprod= 1.d0
+	  aprod= 1.e0
 	  adot= akp*am
 	  alpha= am**2+ame**2-2.*adot
 	  ar1= (am**2-adot+sqrt(adot**2-(ame*am)**2))/alpha
@@ -189,7 +189,7 @@ real*8 function brem(ein,eout,egamma,radiate_proton,bsoft,bhard,dbsoft)
 	  write(6,*)' bzz=   ',bzz
 	  write(6,*)' bhard= ',bhard
 	  write(6,*)' total= ',bsoft+bhard
-	  write(6,*)' exp=   ',1.-dexp(-1.*(bsoft))*(1.-bhard)
+	  write(6,*)' exp=   ',1.-exp(-1.*(bsoft))*(1.-bhard)
 	  write(6,*)' '
 	  write(6,*)' ultra-relativistic limit'
 	  call srad(ak,akp,eang,q2,ame,am,ap,de,produce_output)
@@ -204,7 +204,7 @@ real*8 function brem(ein,eout,egamma,radiate_proton,bsoft,bhard,dbsoft)
 ! ......... the derivative has dimension 1/[energy] --> convert back to MeV
 	dbsoft = dbsoft/1000.
 	if (exponentiate) then
-	  brem = -dbsoft/dexp(bsoft)
+	  brem = -dbsoft/exp(bsoft)
 	else
 	  brem = 1.-dbsoft
 	endif
@@ -293,7 +293,7 @@ real*8 function spence(ax)
 
 	real*8 ax,bx
 
-	bx= dabs(ax)
+	bx= abs(ax)
 
 ! ... N.B. Have replaced the former calculation (commented out) with an
 ! ... approximate expression -- saves a WHALE of CPU!
@@ -409,10 +409,10 @@ real*8 function bremos(egamma,		! photon energy
 	p_i%e = mp
 
 ! ... check energy-momentum conservation
-!	e_check= dabs(k_f%e+p_f%e-k_i%e-p_i%e)
-!	x_check= dabs(k_f%x+p_f%x-k_i%x-p_i%x)
-!	y_check= dabs(k_f%y+p_f%y-k_i%y-p_i%y)
-!	z_check= dabs(k_f%z+p_f%z-k_i%z-p_i%z)
+!	e_check= abs(k_f%e+p_f%e-k_i%e-p_i%e)
+!	x_check= abs(k_f%x+p_f%x-k_i%x-p_i%x)
+!	y_check= abs(k_f%y+p_f%y-k_i%y-p_i%y)
+!	z_check= abs(k_f%z+p_f%z-k_i%z-p_i%z)
 !
 !	if((e_check.gt.0.0001).or.(x_check.gt.0.0001).or.
 !     +		(y_check.gt.0.0001).or.(z_check.gt.0.0001)) then
@@ -433,17 +433,17 @@ real*8 function bremos(egamma,		! photon energy
 ! ... electron terms
 
 ! ........ direct initial electron
-	aprod= 1.d0
+	aprod= 1.e0
 	bei= aprod*(-1./twopi)*log(k_i%e/de)
 	dbei= aprod*(-1./twopi)*(-1./de)
 
 ! ........ direct final electron
-	aprod= 1.d0
+	aprod= 1.e0
 	bef= aprod*(-1./twopi)*log(k_f%e/de)
 	dbef= aprod*(-1./twopi)*(-1./de)
 
 ! ........ e-e interference
-	aprod= -1.d0
+	aprod= -1.e0
 	adot= k_i%e*k_f%e-k_i%x*k_f%x-k_i%y*k_f%y-k_i%z*k_f%z
 	alpha= 2.*ame**2-2.*adot
 	ar1= 0.5+sqrt(4.*adot**2-4.*ame**4)/(2.*alpha)
@@ -457,17 +457,17 @@ real*8 function bremos(egamma,		! photon energy
 	if (radiate_proton) then
 
 ! ........ initial p direct
-	  aprod= 1.d0
+	  aprod= 1.e0
 	  bpi= aprod*(-1./twopi)*log(p_i%e/de)
 	  dbpi= aprod*(-1./twopi)*(-1./de)
 
 ! ........ final p direct
-	  aprod= 1.d0
+	  aprod= 1.e0
 	  bpf= aprod*(-1./twopi)*log(p_f%e/de)
 	  dbpf= aprod*(-1./twopi)*(-1./de)
 
 ! ........ p-p interference
-	  aprod= -1.d0
+	  aprod= -1.e0
 	  adot= p_i%e*p_f%e-p_i%x*p_f%x-p_i%y*p_f%y-p_i%z*p_f%z
 	  alpha= ami**2+amf**2-2.*adot
 	  ar1= (2.*amf**2-2.*adot+sqrt(4.*adot**2-4.*(ami*amf)**2))/(2.*alpha)
@@ -477,7 +477,7 @@ real*8 function bremos(egamma,		! photon energy
 	  if (produce_output) write(6,*) ar1,ar2
 
 ! ........ ei-pi interference
-	  aprod= -1.d0
+	  aprod= -1.e0
 	  adot= k_i%e*p_i%e-k_i%x*p_i%x-k_i%y*p_i%y-k_i%z*p_i%z
 	  alpha= ami**2+ame**2-2.*adot
 	  ar1= (2.*ami**2-2.*adot+sqrt(4.*adot**2-4.*(ame*ami)**2))/(2.*alpha)
@@ -487,7 +487,7 @@ real*8 function bremos(egamma,		! photon energy
 	  if (produce_output) write(6,*) ar1,ar2
 
 ! ........ ef-pf interference
-	  aprod= -1.d0
+	  aprod= -1.e0
 	  adot= k_f%e*p_f%e-k_f%x*p_f%x-k_f%y*p_f%y-k_f%z*p_f%z
 	  alpha= amf**2+ame**2-2.*adot
 	  ar1= (2.*amf**2-2.*adot+sqrt(4.*adot**2-4.*(ame*amf)**2))/(2.*alpha)
@@ -497,7 +497,7 @@ real*8 function bremos(egamma,		! photon energy
 	  if (produce_output) write(6,*) ar1,ar2
 
 ! ........ ei-pf interference
-	  aprod= 1.d0
+	  aprod= 1.e0
 	  adot= k_i%e*p_f%e-k_i%x*p_f%x-k_i%y*p_f%y-k_i%z*p_f%z
 	  alpha= amf**2+ame**2-2.*adot
 	  ar1=(2.*amf**2-2.*adot+sqrt(4.*adot**2-4.*(ame*amf)**2))/(2.*alpha)
@@ -507,7 +507,7 @@ real*8 function bremos(egamma,		! photon energy
 	  if (produce_output) write(6,*) ar1,ar2
 
 ! ........ ef-pi interference
-	  aprod= 1.d0
+	  aprod= 1.e0
 	  adot= k_f%e*p_i%e-k_f%x*p_i%x-k_f%y*p_i%y-k_f%z*p_i%z
 	  alpha= ami**2+ame**2-2.*adot
 	  ar1=(2.*ami**2-2.*adot+sqrt(4.*adot**2-4.*(ame*ami)**2))/(2.*alpha)
@@ -548,11 +548,11 @@ real*8 function bremos(egamma,		! photon energy
 	  write(6,*)' bzz=     ',bzz
 	  write(6,*)' bhard=   ',bhard
 	  write(6,*)' total=   ',1-bsoft-bhard
-	  write(6,*)' exp=     ',dexp(-1.*(bsoft))*(1.-bhard)
+	  write(6,*)' exp=     ',exp(-1.*(bsoft))*(1.-bhard)
 	  write(6,*)' 1-bhard= ',1-bhard
-	  write(6,*)' exps=    ',dexp(-1.*(bsoft))
-	  write(6,*)' expse=   ',dexp(-1.*b)
-	  write(6,*)' expsp=   ',dexp(-1.*(bz+bzz))
+	  write(6,*)' exps=    ',exp(-1.*(bsoft))
+	  write(6,*)' expse=   ',exp(-1.*b)
+	  write(6,*)' expsp=   ',exp(-1.*(bz+bzz))
 	  write(6,*)' '
 	  write(6,*)'  Schwinger Result'
 	  bsch= 2.*e2/pi*((log(k_i%e/de)-13./12.)*(log(q2/ame**2)-1.)+17./36.)
@@ -564,7 +564,7 @@ real*8 function bremos(egamma,		! photon energy
 ! ......... the derivative has dimension 1/[energy] --> convert back to MeV
 	dbsoft = dbsoft/1000.	!convert back to MeV
 	if (exponentiate) then
-	  bremos = -dbsoft/dexp(bsoft)
+	  bremos = -dbsoft/exp(bsoft)
 	else
 	  bremos = 1.-dbsoft
 	endif
diff --git a/dbase.f b/dbase.f
index d8cd052d..59a8acfc 100644
--- a/dbase.f
+++ b/dbase.f
@@ -483,8 +483,8 @@ subroutine dbase_read(H)
 
 	if (doing_pion .or. doing_kaon .or. doing_delta .or.
      >		(cuts%Em%min.eq.cuts%Em%max) ) then
-	  cuts%Em%min = -1.d6
-	  cuts%Em%max =  1.d6
+	  cuts%Em%min = -1.e6
+	  cuts%Em%max =  1.e6
 	endif
 
 	if (abs(deForest_flag).gt.1) stop 'Idiot! check setting of deForest_flag'
@@ -559,9 +559,9 @@ subroutine dbase_read(H)
 	    tmpfile='benharsf_12.dat'
 	  endif
 ! Choos proton or neutron spectral function based on targ.Mtar_struck
-	  if (abs(targ%Mtar_struck-Mp).le.1.d-6) then
+	  if (abs(targ%Mtar_struck-Mp).le.1.e-6) then
 	    call sf_lookup_init(tmpfile,.true.)			!proton S.F.
-	  else if (abs(targ%Mtar_struck-Mn).le.1.d-6) then
+	  else if (abs(targ%Mtar_struck-Mn).le.1.e-6) then
 	    call sf_lookup_init(tmpfile,.false.)		!neutron S.F.
 	  else
 	    write(6,*) 'targ%Mtar_struck = ',targ%Mtar_struck
diff --git a/enerloss_new.f b/enerloss_new.f
index 90a160c9..3cc875fc 100644
--- a/enerloss_new.f
+++ b/enerloss_new.f
@@ -21,12 +21,12 @@ subroutine enerloss_new(len,dens,zeff,aeff,epart,mpart,typeflag,Eloss)
         beta = sqrt(1.-1./gamma**2)
 
 	if(zeff.eq.1) then	!Ionization potential in MeV
-	  I = 21.8d-06
+	  I = 21.8e-06
 	else
-	  I = (16.*zeff**0.9)*1.0d-06
+	  I = (16.*zeff**0.9)*1.0e-06
 	endif
 
-	hnup = 28.816d-06*sqrt(dens*zeff/aeff) !plasma frequency
+	hnup = 28.816e-06*sqrt(dens*zeff/aeff) !plasma frequency
 	log10bg = log(beta*gamma)/log(10.)
 	CO=log(hnup)-log(I)+0.5
 
@@ -45,9 +45,9 @@ subroutine enerloss_new(len,dens,zeff,aeff,epart,mpart,typeflag,Eloss)
 	if (thick.le.0.) then
 	  Eloss = 0.
 	else
-	  Eloss_mp = 0.1536d-03 * zeff/aeff * thick * ( 19.26 +
+	  Eloss_mp = 0.1536e-03 * zeff/aeff * thick * ( 19.26 +
      &          log(thick/dens) )
-	  Eloss_mp_new = 0.1536d-03 * zeff/aeff *thick/beta**2* (
+	  Eloss_mp_new = 0.1536e-03 * zeff/aeff *thick/beta**2* (
      &          log(me/I**2) + 1.063 + 2.*log(gamma*beta) + 
      &		log(0.1536*zeff/aeff*thick/beta**2)-beta**2-denscorr)
 c	  write(6,*) 'ELOSS',Eloss_mp,Eloss_mp_new 
@@ -56,7 +56,7 @@ subroutine enerloss_new(len,dens,zeff,aeff,epart,mpart,typeflag,Eloss)
 	  Eloss_mp = Eloss_mp_new*1000.
 	  chsi = 0.307075/2.*zeff/aeff*thick/beta**2
 	  if(typeflag.eq.1)then
-	    x=abs(gauss1(10.0d0))
+	    x=abs(gauss1(10.0e0))
 	  elseif(typeflag.eq.2)then
 	    x=3
 	  elseif(typeflag.eq.3)then
diff --git a/init.f b/init.f
index 0ab20d95..080f9edd 100644
--- a/init.f
+++ b/init.f
@@ -12,7 +12,7 @@ subroutine target_init(using_Eloss,using_Coulomb,the_cent,thp_cent,
 	logical	using_Eloss, using_Coulomb
 
 	real*8 zero
-	parameter (zero=0.0d0)	!double precision zero for subroutines calls.
+	parameter (zero=0.0e0)	!double precision zero for subroutines calls.
 
 ! The radiation length of the target
 
@@ -225,7 +225,7 @@ subroutine limits_init(H)
      >		targ%Coulomb%max + dE_edge_test
 	pp%min = (1.+SPedge%p%delta%min/100.)*spec%p%P - dE_edge_test
 	pp%max = (1.+SPedge%p%delta%max/100.)*spec%p%P + dE_edge_test
-	pp%min = max(0.001d0,pp%min)  !avoid p=0 (which can lead to div by zero)(
+	pp%min = max(0.001e0,pp%min)  !avoid p=0 (which can lead to div by zero)(
 	edge%p%E%min = sqrt(pp%min**2 + Mh2)
 	edge%p%E%max = sqrt(pp%max**2 + Mh2)
 
@@ -296,7 +296,7 @@ subroutine limits_init(H)
 	  slop%total%Em%used = slop_Ebeam + slop_Ee + slop_Ep + dE_edge_test
 	  edge%Em%min = cuts%Em%min - slop%total%Em%used
 	  edge%Em%max = cuts%Em%max + slop%total%Em%used
-	  edge%Em%min = max(0.d0,edge%Em%min)
+	  edge%Em%min = max(0.e0,edge%Em%min)
 	endif
 
 ! Edges on Em, Pm, etc... VERTEXedge.* values are vertex limits.  edge.* values
@@ -460,7 +460,7 @@ subroutine limits_init(H)
 
 	gen%sumEgen%min = gen%sumEgen%min - dE_edge_test
 	gen%sumEgen%max = gen%sumEgen%max + dE_edge_test
-	gen%sumEgen%min = max(0.d0,gen%sumEgen%min)
+	gen%sumEgen%min = max(0.e0,gen%sumEgen%min)
 
 ! ... E arm GENERATION limits from sumEgen.
 ! ... Not used for doing_hyd_elast, but define for the hardwired histograms.
@@ -524,9 +524,9 @@ subroutine limits_init(H)
 	H%gen%p%yptar%bin = (gen%p%yptar%max-gen%p%yptar%min)/float(nHbins)
 	H%gen%p%xptar%bin = (gen%p%xptar%max-gen%p%xptar%min)/float(nHbins)
 	H%gen%Em%min = VERTEXedge%Em%min
-	H%gen%Em%bin = (max(100.d0,VERTEXedge%Em%max) - VERTEXedge%Em%min)/float(nHbins)
+	H%gen%Em%bin = (max(100.e0,VERTEXedge%Em%max) - VERTEXedge%Em%min)/float(nHbins)
 	H%gen%Pm%min = VERTEXedge%Pm%min
-	H%gen%Pm%bin = (max(100.d0,VERTEXedge%Pm%max) - VERTEXedge%Pm%min)/float(nHbins)
+	H%gen%Pm%bin = (max(100.e0,VERTEXedge%Pm%max) - VERTEXedge%Pm%min)/float(nHbins)
 
 	H%geni%e%delta%min = H%gen%e%delta%min
 	H%geni%e%yptar%min = H%gen%e%yptar%min
@@ -663,7 +663,7 @@ subroutine radc_init_ev (main,vertex)
 ! modifications to vertex.* variables in later calls.
 
 	real*8 zero
-	parameter (zero=0.0d0)	!double precision zero for subroutine calls.
+	parameter (zero=0.0e0)	!double precision zero for subroutine calls.
 
 ! Compute some quantities that will be needed for rad corr on this event
 
diff --git a/jacobians.f b/jacobians.f
index c89cda12..f9c8e0dc 100644
--- a/jacobians.f
+++ b/jacobians.f
@@ -54,11 +54,11 @@ subroutine transform_to_cm(vertex,main,
 
 * f's and fer indicate fermi momenta, s, star or cm CM system
 	tcos = vertex%up%x*vertex%uq%x+vertex%up%y*vertex%uq%y+vertex%up%z*vertex%uq%z
-	if(tcos-1..gt.0..and.tcos-1..lt.1.d-8)tcos=1.0
+	if(tcos-1..gt.0..and.tcos-1..lt.1.e-8)tcos=1.0
 	tsin=sqrt(1.-tcos**2)
 
 	tfcos = pferx*vertex%uq%x+pfery*vertex%uq%y+pferz*vertex%uq%z
-	if(tfcos-1..gt.0..and.tfcos-1..lt.1.d-8)tfcos=1.0
+	if(tfcos-1..gt.0..and.tfcos-1..lt.1.e-8)tfcos=1.0
 	tfsin=sqrt(1.-tfcos**2)
 
 	cospq = cos(main%phi_pq)
@@ -118,7 +118,7 @@ subroutine transform_to_cm(vertex,main,
 
 * DJG: Boost virtual photon to CM.
 
-	zero =0.d0
+	zero =0.e0
 	call loren(gstar,bstarx,bstary,bstarz,vertex%nu,
      >		zero,zero,vertex%q,nustar,qstarx,qstary,qstarz,qstar)
 
diff --git a/last.kumac b/last.kumac
deleted file mode 100644
index ae9df337..00000000
--- a/last.kumac
+++ /dev/null
@@ -1,3 +0,0 @@
-*** Begin of history file: Thu Jun 19 09:54:52 2008
-exit
-*** End   of history file: Thu Jun 19 09:54:54 2008
diff --git a/mt19937.f b/mt19937.f
index b28ed168..d918ae89 100644
--- a/mt19937.f
+++ b/mt19937.f
@@ -154,9 +154,9 @@ double precision function grnd()
       y=ieor(y,ishft(y,-18))
 
       if(y.lt.0) then
-        grnd=(dble(y)+2.0d0**32)/(2.0d0**32-1.0d0)
+        grnd=(dble(y)+2.0e0**32)/(2.0e0**32-1.0e0)
       else
-        grnd=dble(y)/(2.0d0**32-1.0d0)
+        grnd=dble(y)/(2.0e0**32-1.0e0)
       endif
 
       return
diff --git a/physics_pion.f b/physics_pion.f
index fd1bab8f..48b2bbe7 100644
--- a/physics_pion.f
+++ b/physics_pion.f
@@ -70,7 +70,7 @@ real*8 function peepi(vertex,main)
 * complete_ev where possible.  WORSE YET, WE CHANGE UNITS OF MAIN.W,... HERE!!!
 
 	tfcos = pferx*vertex%uq%x+pfery*vertex%uq%y+pferz*vertex%uq%z
-	if(tfcos-1..gt.0..and.tfcos-1..lt.1.d-8)tfcos=1.0
+	if(tfcos-1..gt.0..and.tfcos-1..lt.1.e-8)tfcos=1.0
 	tfsin=sqrt(1.-tfcos**2)
 
 	s = (vertex%nu+efer)**2-(vertex%q+pfer*tfcos)**2-(pfer*tfsin)**2
@@ -108,11 +108,11 @@ real*8 function peepi(vertex,main)
 * IF low_w_flag is set.
 * NOTE: s, t, mtar, and Q2 must be converted to GeV first.
 
-c	ntup.sigcm1 = sig_blok(thetacm,phicm,main%t/1.d6,vertex%q2/1.d6,s/1%d6,main.epsilon,
+c	ntup.sigcm1 = sig_blok(thetacm,phicm,main%t/1.e6,vertex%q2/1.e6,s/1%e6,main.epsilon,
 c     >		targ%Mtar_struck/1000.,which_pion)
 
 CDG Change default to PARAM04 - this works better at larger Q2
-	ntup%sigcm1 = sig_param04(thetacm,phicm,main%t/1.d6,vertex%q2/1.d6,s/1.d6,main%epsilon,
+	ntup%sigcm1 = sig_param04(thetacm,phicm,main%t/1.e6,vertex%q2/1.e6,s/1.e6,main%epsilon,
      >		targ%Mtar_struck/1000.,which_pion)
 
 	sigma_eepi = ntup%sigcm1
@@ -120,8 +120,8 @@ real*8 function peepi(vertex,main)
 * For low w, use multipole expansion as default cross section model.
 	if(low_w_flag) then
 
-	  ntup%sigcm2 = sig_multipole(k_eq,efer,qstar,tfcos,ppicm,s/1.d6,thetacm,
-     >		phicm,main%epsilon,final_state,vertex%q2/1.d6,targ%Mtar_struck/1000.,pfer,mh)
+	  ntup%sigcm2 = sig_multipole(k_eq,efer,qstar,tfcos,ppicm,s/1.e6,thetacm,
+     >		phicm,main%epsilon,final_state,vertex%q2/1.e6,targ%Mtar_struck/1000.,pfer,mh)
 	  sigma_eepi = ntup%sigcm2
 
 	endif
@@ -346,7 +346,7 @@ real*8 function sig_multipole(nu,efer,qstar,tfcos,ppicm,s_gev,thetacm,
 				!the four terms together. DJG
 
 	sig219=(sigt+eps*sigl+eps*cos(2.*phicm)*sigtt
-     >		+sqrt(2.0*eps*(1.+eps))*cos(phicm)*siglt)/1.d0
+     >		+sqrt(2.0*eps*(1.+eps))*cos(phicm)*siglt)/1.e0
 
 * DJG: sig219 is dsig/dOmega_cm - convert to dsig/dtdphi_cm
 * DJG: using dt/dcos_cm = 2*ppicm*qcm
@@ -415,7 +415,7 @@ real*8 function sig_blok(thetacm,phicm,t,q2_gev,s_gev,eps,mtar_gev,which_pion)
 	  sigtt=sigtt/(0.3+q2_gev)
 
 	  sig219=(sigt+eps*sigl+eps*cos(2.*phicm)*sigtt
-     >		+sqrt(2.0*eps*(1.+eps))*cos(phicm)*siglt)/1.d0
+     >		+sqrt(2.0*eps*(1.+eps))*cos(phicm)*siglt)/1.e0
 
 * GMH: Brauel scaled all his data to W=2.19 GeV, so rescale by 1/(W**2-mp**2)**2
 * HPB: factor 15.333 therefore is value of (W**2-mp**2)**2 at W=2.19
@@ -466,7 +466,7 @@ real*8 function sig_param04(thetacm,phicm,t,q2_gev,s_gev,eps,mtar_gev,which_pion
 
 
 	  sig219=(sigt+eps*sigl+eps*cos(2.*phicm)*sigtt
-     >		+sqrt(2.0*eps*(1.+eps))*cos(phicm)*siglt)/1.d0
+     >		+sqrt(2.0*eps*(1.+eps))*cos(phicm)*siglt)/1.e0
 
 * GMH: Brauel scaled all his data to W=2.19 GeV, so rescale by 1/(W**2-mp**2)**2
 * HPB: factor 15.333 therefore is value of (W**2-mp**2)**2 at W=2.19
diff --git a/physics_proton.f b/physics_proton.f
index ff7c139a..152adeaf 100644
--- a/physics_proton.f
+++ b/physics_proton.f
@@ -80,9 +80,9 @@ real*8 function deForest(ev)
 	if (sin_gamma.ne.0) cos_phi=(ev%uq%y*(ev%uq%y*ev%up%z-ev%uq%z*ev%up%y)
      >		- ev%uq%x*(ev%uq%z*ev%up%x-ev%uq%x*ev%up%z))
      >		/ sin_gamma / sqrt(1.-ev%uq%z**2)
-	if (abs(cos_phi).gt.1.) then		!set to +/-1, warn if >1.d-10
+	if (abs(cos_phi).gt.1.) then		!set to +/-1, warn if >1.e-10
 	  cos_phi = sign(1.0,cos_phi)
-	  if ( (abs(cos_phi)-1.) .gt. 1.d-10) write(6,*)
+	  if ( (abs(cos_phi)-1.) .gt. 1.e-10) write(6,*)
      >		'WARNING: deForest give cos_phi = ',cos_phi,' at event',nevent
 	endif
 
@@ -147,8 +147,8 @@ subroutine fofa_best_fit(qsquar,GE,GM)
 
 	mu_p = 2.793
 
-	Q2 = -qsquar*(hbarc**2.)*1.d-6
-	Q  = sqrt(max(Q2,0.d0))
+	Q2 = -qsquar*(hbarc**2.)*1.e-6
+	Q  = sqrt(max(Q2,0.e0))
 
 	Q3 = Q**3.
 	Q4 = Q**4.
diff --git a/radc.f b/radc.f
index 37775156..77b03196 100644
--- a/radc.f
+++ b/radc.f
@@ -82,7 +82,7 @@ subroutine basicrad(itail,Egamma_lo,Egamma_hi,Egamma,weight,val_reciprocal)
 ! in full BASICRAD prescription
 
 	weight = c(itail)/g(itail) * (power_hi-power_lo)
-
+	
 	if(itail.eq.4)itail=0
 	return
 	end
@@ -483,7 +483,7 @@ subroutine generate_rad(main,vertex,orig,success)
 ! ... adjust the e'/hadron momenta (if they radiated significantly)
 
 	orig%e%E = vertex%e%E - Egamma_used(2)
-	if(orig%e%E.le.0d0) then
+	if(orig%e%E.le.0e0) then
 	   if (debug(4)) write(6,*)'gen_rad: Negative electron energy -failed'
 	  return
 	endif
@@ -538,7 +538,7 @@ real*8 function peaked_rad_weight(vertex,Egamma,
 	type(event):: vertex
 
 	real*8 zero
-	parameter (zero=0.0d0)	!double precision zero for subroutine calls
+	parameter (zero=0.0e0)	!double precision zero for subroutine calls
 
 	basicrad_val_reciprocal=basicrad_val_reciprocal+0. !avoid unused variable error
 ! Compute a more precise value for the radiative probability at the
@@ -749,7 +749,7 @@ real*8 function spen(x)
 	y = 1.0
 	s = 0.0
 	i = 0
-	do while (i.le.100 .and. abs(y).gt.abs(s)*1.d-4)
+	do while (i.le.100 .and. abs(y).gt.abs(s)*1.e-4)
 	  i = i+1
 	  y = x*y
 	  s = s+y/float(i**2)
diff --git a/rho_decay.f b/rho_decay.f
index f6bcee8f..48c0be19 100644
--- a/rho_decay.f
+++ b/rho_decay.f
@@ -38,7 +38,7 @@ subroutine rho_decay(orig,p_spec,epsilon,success)
 
 	logical success
 
-	parameter (ctaurho=1.31467d-13)
+	parameter (ctaurho=1.31467e-13)
 C ============================= Executable Code ================================
 
 C Calulate R = sigmaL/sigmaT
diff --git a/rho_physics.f b/rho_physics.f
index d07701f8..1f77b397 100644
--- a/rho_physics.f
+++ b/rho_physics.f
@@ -96,11 +96,11 @@ real*8 function peerho(vertex,main)
 * f's and fer indicate fermi momenta, s, star or cm CM system
 
 	tcos = vertex%up%x*vertex%uq%x+vertex%up%y*vertex%uq%y+vertex%up%z*vertex%uq%z
-	if(tcos-1..gt.0..and.tcos-1..lt.1.d-8)tcos=1.0
+	if(tcos-1..gt.0..and.tcos-1..lt.1.e-8)tcos=1.0
 	tsin=sqrt(1.-tcos**2)
 
 	tfcos = pferx*vertex%uq%x+pfery*vertex%uq%y+pferz*vertex%uq%z
-	if(tfcos-1..gt.0..and.tfcos-1..lt.1.d-8)tfcos=1.0
+	if(tfcos-1..gt.0..and.tfcos-1..lt.1.e-8)tfcos=1.0
 	tfsin=sqrt(1.-tfcos**2)
 
 	epsi = 1./(1.+2*(1.+vertex%nu**2/vertex%Q2)*tan(vertex%e%theta/2.)**2)
@@ -108,11 +108,11 @@ real*8 function peerho(vertex,main)
 	s = (vertex%nu+efer)**2-(vertex%q+pfer*tfcos)**2-(pfer*tfsin)**2
 	nu = (s-(efer**2-pfer**2))/2./(efer-pfer*tfcos) !equiv pho energy(MeV)
 
-	s = s/1.d6				!CONVERT TO (GeV)**2
+	s = s/1.e6				!CONVERT TO (GeV)**2
 	main%w = sqrt(s)
 
 	t = vertex%Q2-Mrho2+2.*vertex%nu*vertex%p%E-2.*vertex%p%P*vertex%q*tcos
-	t = t/1.d6				!CONVERT TO (GeV/c)**2
+	t = t/1.e6				!CONVERT TO (GeV/c)**2
 	main%t = t
 
 
@@ -168,7 +168,7 @@ real*8 function peerho(vertex,main)
 
 * DJG: Boost virtual photon to CM.
 
-	zero =0.d0
+	zero =0.e0
 	call loren(gstar,bstarx,bstary,bstarz,vertex%nu,
      >		zero,zero,vertex%q,nustar,qstarx,qstary,qstarz,qstar)
 
@@ -229,7 +229,7 @@ real*8 function peerho(vertex,main)
 ! DJG need tprime and tmin here
 ! DJG Need an overall minus sign since we calculate -t above.
 
-	tmin = -( ((-Q2_g-mrho2/1.d6-(targ%mtar_struck/1000.)**2+
+	tmin = -( ((-Q2_g-mrho2/1.e6-(targ%mtar_struck/1000.)**2+
      >       (targ%mtar_struck/1000.)**2)/(2.*sqrt(s)))**2-
      >       ((qstar-ppicm)/1000.)**2 )
 
@@ -257,7 +257,7 @@ real*8 function peerho(vertex,main)
 
 	cdeltatau = hbarc/(sqrt(vertex%nu**2+vertex%Q2+mrho2)-vertex%nu) !in fm!
 	if(cdeltatau.lt.2.0) then
-	   brho = 4.4679 + 8.6106*dlog10(cdeltatau)
+	   brho = 4.4679 + 8.6106*log10(cdeltatau)
 	else
 	   brho = 7.0
 	endif
diff --git a/semi_dilution.f b/semi_dilution.f
index 510e1163..cd1a631e 100644
--- a/semi_dilution.f
+++ b/semi_dilution.f
@@ -87,7 +87,7 @@ real*8 function semi_dilution(vertex,main)
 	   first=.FALSE.
 	endif
 
-	s = (2.*vertex%Ein*mp + mp**2)/1.d6  !convert to GeV2
+	s = (2.*vertex%Ein*mp + mp**2)/1.e6  !convert to GeV2
 	xbj = vertex%Q2/2./mp/vertex%nu   
 	if(xbj.gt.1.0) then
 	   write(6,*) 'XBj is too large!', xbj
@@ -97,9 +97,9 @@ real*8 function semi_dilution(vertex,main)
 
 C DJG convert some stuff to GeV
 
-	Q2gev = vertex%q2/1.d6
+	Q2gev = vertex%q2/1.e6
 	Qgev = sqrt(Q2gev)
-	pt2gev = vertex%pt2/1.d6
+	pt2gev = vertex%pt2/1.e6
 
 C Get the PDFs
 	ipart=1
@@ -252,7 +252,7 @@ real*8 function semi_dilution(vertex,main)
 c	1    *cos(vertex.theta_pq)
 
 
-c	sigma_eepiX = sigsemi*jacobian/1.d6
+c	sigma_eepiX = sigsemi*jacobian/1.e6
 
 c	main.davejac = jacobian
 c	ntup.sigcm = sighad
diff --git a/semi_physics.f b/semi_physics.f
index b0c08b9c..67241db5 100644
--- a/semi_physics.f
+++ b/semi_physics.f
@@ -124,7 +124,7 @@ real*8 function peepiX(vertex,vertex0,main,survivalprob,doing_cent)
 	   Epz = vertex0%ue%z*Eprime
 	   if(sigc_flag.eq.0) then  ! binning in z
 	      kcent = vertex0%zhad
-	      pt2 = sigc_kin_ind*1.d6
+	      pt2 = sigc_kin_ind*1.e6
 	      zhad = 0.0
 	      do i=1,sigc_nbin
 		 klo = sigc_kin_min+(i-1)*(sigc_kin_max-sigc_kin_min)/sigc_nbin
@@ -139,9 +139,9 @@ real*8 function peepiX(vertex,vertex0,main,survivalprob,doing_cent)
 	      pt2 = 0.0
 	      do i=1,sigc_nbin
 		 klo = sigc_kin_min+(i-1)*(sigc_kin_max-sigc_kin_min)/sigc_nbin
-		 klo = klo*1.d6
+		 klo = klo*1.e6
 		 khi = sigc_kin_min+i*(sigc_kin_max-sigc_kin_min)/sigc_nbin
-		 khi = khi*1.d6
+		 khi = khi*1.e6
 		 if(vertex%pt2.gt.klo .and. vertex%pt2.le.khi) then
 		    pt2 = klo + (khi-klo)/2.
 		 endif
@@ -153,9 +153,9 @@ real*8 function peepiX(vertex,vertex0,main,survivalprob,doing_cent)
 	      write(6,*) 'Central Kinematics:'
 	      write(6,*) 'Ebeam (GeV):',Eb/1000
 	      write(6,*) 'nu (GeV)   :',nu/1000
-	      write(6,*) 'Q2 (GeV2)  :',Q2/1d6
+	      write(6,*) 'Q2 (GeV2)  :',Q2/1e6
 	      if(sigc_flag.eq.0) then
-		 write(6,*) 'Pt2 (GeV2) :',pt2/1d6
+		 write(6,*) 'Pt2 (GeV2) :',pt2/1e6
 		 write(6,*) 'Binning in z from',sigc_kin_min,
      >  	      'to',sigc_kin_max
 	      elseif(sigc_flag.eq.1) then
@@ -200,7 +200,7 @@ real*8 function peepiX(vertex,vertex0,main,survivalprob,doing_cent)
 	   cthpq = cos(vertex%theta_pq)
 	endif
 
-	sx = (2.*Eb*mtar + mtar**2)/1.d6  !convert to GeV2
+	sx = (2.*Eb*mtar + mtar**2)/1.e6  !convert to GeV2
 	if(do_fermi) then  ! xbj = Q2/(2 P.q)
 	   xbj = Q2/2./(efer*nu - abs(pfer)*(pferx*qx + pfery*qy + pferz*qz))
 	   if(.not.doing_cent) then
@@ -222,9 +222,9 @@ real*8 function peepiX(vertex,vertex0,main,survivalprob,doing_cent)
 
 C DJG convert some stuff to GeV
 
-	Q2gev = Q2/1.d6
+	Q2gev = Q2/1.e6
 	Qgev = sqrt(Q2gev)
-	pt2gev = pt2/1.d6
+	pt2gev = pt2/1.e6
 
 C Get the PDFs
 	if(first) then
@@ -424,8 +424,8 @@ real*8 function peepiX(vertex,vertex0,main,survivalprob,doing_cent)
 
 	jacobian = 1./(nu/1000.)*2.*(phad/1000.)**2*cthpq
 
-C The 1.d6 converts from microbarn/GeV^2 to microbarn/MeV^2
-	sigma_eepiX = sigsemi*jacobian/1.d6
+C The 1.e6 converts from microbarn/GeV^2 to microbarn/MeV^2
+	sigma_eepiX = sigsemi*jacobian/1.e6
 
 
 * Note that there is an additional factor 'fac' included with the fermi-smeared cross
diff --git a/sf_lookup.f b/sf_lookup.f
index d6299ee2..7c97356c 100644
--- a/sf_lookup.f
+++ b/sf_lookup.f
@@ -184,7 +184,7 @@ subroutine sf_lookup(Em,Pm,SF)
 	logsf=(sf1 + (Em-Em1)*(sf2-sf1)/(Em2-Em1))
 	SF=logsf
 
-	if (SF.lt.1.d-20) SF=0
+	if (SF.lt.1.e-20) SF=0
 
 	return
 	end
diff --git a/simc.f b/simc.f
index 11d2ec53..9956cce4 100644
--- a/simc.f
+++ b/simc.f
@@ -36,7 +36,7 @@ program simc
 	type(sums_twoarm)::	sumerr, sumerr2, aveerr, resol
 
 	real*8 one
-	parameter (one=1.0d0)	!double precision 1 for subroutine calls
+	parameter (one=1.0e0)	!double precision 1 for subroutine calls
 
 	real*8 grnd
 	real*8 ang_targ_earm,ang_targ_parm
@@ -203,7 +203,7 @@ program simc
 	  if (mod(ntried,ninform).eq.1) then
 	    write (6,'(1x,a,i9,a,i8,a,e11.4)') 'Generating Event',
      >		ntried, ' ... ', nevent,'  successes so far - Monitor:',
-     >		wtcontribute*luminosity/ntried
+     >	  wtcontribute*luminosity/ntried
 	    if (ntried.ge.5000) ninform = 20000
 	  endif
 
@@ -827,7 +827,7 @@ subroutine report(iun,timestring1,timestring2,central,contrib,
 	write(iun,'(9x,a12,'' = '',2(f15.4,2x),2x,a5)') 'yptar',
      >		central%e%yptar, central%p%yptar, 'mr'
 
-	write(iun,'(17x,a10,'' = '',f15.4,2x,a9)') 'Q2',central%Q2/1.d6,'(GeV/c)^2'
+	write(iun,'(17x,a10,'' = '',f15.4,2x,a9)') 'Q2',central%Q2/1.e6,'(GeV/c)^2'
 	write(iun,'(17x,a10,'' = '',f15.4,2x,a9)') 'q', central%q, 'MeV/c'
 	write(iun,'(17x,a10,'' = '',f15.4,2x,a9)') 'nu',
      >		central%nu, 'MeV'
@@ -917,7 +917,7 @@ subroutine report(iun,timestring1,timestring2,central,contrib,
 	write(iun,'(12x,''Ncontribute    = '',i10)') ncontribute
 	write(iun,'(12x,''Nco_no_rad_prot= '',i10)') ncontribute_no_rad_proton
 	write(iun,'(12x,''-> %no_rad_prot= '',f10.3)')
-     >		(100.*ncontribute_no_rad_proton/max(dble(ncontribute),0.1d0))
+     >		(100.*ncontribute_no_rad_proton/max(dble(ncontribute),0.1e0))
 	write(iun,'(/1x,''INTEGRATED WEIGHTS (number of counts in delta/Em cuts!):'')')
 	write(iun,'(1x,''              MeV: wtcontr= '',e16.8)') wtcontribute/nevent
 
@@ -1068,7 +1068,7 @@ subroutine report(iun,timestring1,timestring2,central,contrib,
      >		contrib%tru%p%yptar%lo*1000., contrib%tru%p%yptar%hi*1000.,'mr'
 	write(iun,9917) 'P arm  xptar', edge%p%xptar%min*1000., edge%p%xptar%max*1000.,
      >		contrib%tru%p%xptar%lo*1000., contrib%tru%p%xptar%hi*1000., 'mr'
-	write(iun,9917) 'Em', max(-999999.999d0,edge%Em%min), min(999999.999d0,edge%Em%max),
+	write(iun,9917) 'Em', max(-999999.999e0,edge%Em%min), min(999999.999e0,edge%Em%max),
      >		contrib%tru%Em%lo, contrib%tru%Em%hi, 'MeV'
 	write(iun,9917) 'Pm', 0., 0., contrib%tru%Pm%lo,
      >		contrib%tru%Pm%hi, 'MeV'
@@ -1288,7 +1288,7 @@ subroutine calculate_central(central,vertex0)
 
 	if(doing_semi) then
 	   write(6,*) 'central event'
-	   write(6,*) 'Pt',sqrt(vertex0%pt2)/1.d3
+	   write(6,*) 'Pt',sqrt(vertex0%pt2)/1.e3
 	   write(6,*) 'z', vertex0%zhad
 	   write(6,*) 'lab cross section (nb/Gev2/sr2)',central%sigcc*1000.0*1000.0*1000.0
 	endif
@@ -1328,7 +1328,7 @@ subroutine montecarlo(orig,main,recon,success)
 	real*8 zhadron
 
 	real*8 zero
-	parameter (zero=0.0d0)	!double precision zero for subroutine calls
+	parameter (zero=0.0e0)	!double precision zero for subroutine calls
 
 ! Prepare the event for the Monte Carlo's and/or spectrometer cuts
 
diff --git a/target.f b/target.f
index 4be46829..8ee9b3fd 100644
--- a/target.f
+++ b/target.f
@@ -18,7 +18,7 @@ subroutine trip_thru_target (narm, zpos, energy, theta, Eloss, radlen,
 	s_Al = 0.0
 	liquid = targ%Z.lt.2.4
 
-	if (abs(zpos) .gt. (targ%length/2.+1.d-5)) then
+	if (abs(zpos) .gt. (targ%length/2.+1.e-5)) then
 	  write(6,*) 'call to trip_thru_target has |zpos| > targ.length/2.'
 	  write(6,*) 'could be numerical error, or could be error in target offset'
 	  write(6,*) 'zpos=',zpos,'  targ%length/2.=',targ%length/2.
@@ -273,7 +273,7 @@ subroutine extreme_trip_thru_target(ebeam, the, thp, pe, pp, z, m)
 	logical	liquid
 
 	real*8 zero
-	parameter (zero=0.0d0)	!double precision zero for subroutine calls
+	parameter (zero=0.0e0)	!double precision zero for subroutine calls
 
 !Given limiting values for the electron/proton angles, the z-position in the
 !target, and beta for the proton, determine min and max losses in target (and
@@ -477,9 +477,9 @@ subroutine extreme_trip_thru_target(ebeam, the, thp, pe, pp, z, m)
 ! Extreme multiple scattering.  Use nominal beam energy rather than minimum
 !  (should be close enough)
 
-	call extreme_target_musc(ebeam,1.d0,
+	call extreme_target_musc(ebeam,1.e0,
      >		targ%teff(1)%max,targ%musc_max(1),targ%musc_nsig_max)
-	call extreme_target_musc(pe%min,1.d0,
+	call extreme_target_musc(pe%min,1.e0,
      >		targ%teff(2)%max,targ%musc_max(2),targ%musc_nsig_max)
 	call extreme_target_musc(pp%min,betap%min,
      >		targ%teff(3)%max,targ%musc_max(3),targ%musc_nsig_max)
diff --git a/trg_track.f b/trg_track.f
index b83a8e2b..a9a6935a 100644
--- a/trg_track.f
+++ b/trg_track.f
@@ -771,7 +771,7 @@ subroutine track_to_tgt(delta,y,dx,dy,frx,fry,mom,mass,ctheta,
 
       vel = abs(mom)/sqrt(mom**2+mass**2)*cc
       eng = sign(1.,mom)*sqrt(mom**2+mass**2)
-      mom_0 = mom/(1.d0+delta/100.d0)
+      mom_0 = mom/(1.e0+delta/100.e0)
 
       vT(1) = -fry    + 100.*dx
       vT(2) = y + 100.*dy
@@ -833,7 +833,7 @@ subroutine track_to_tgt(delta,y,dx,dy,frx,fry,mom,mass,ctheta,
            call mc_shms_recon(delta,dy,dx,y,xxd,arm)
         endif
 
-        mom = mom_0*(1.d0+delta/100.d0)
+        mom = mom_0*(1.e0+delta/100.e0)
         vel = abs(mom)/sqrt(mom**2+mass**2)*cc
         eng = sign(1.,mom)*sqrt(mom**2+mass**2)