From a1922436cb30beea4b7ae21633b588a0c98eb77c Mon Sep 17 00:00:00 2001
From: Steven Roberts <roberts115@llnl.gov>
Date: Fri, 27 Sep 2024 20:55:41 -0700
Subject: [PATCH] swig

---
 .../fmod_int32/farkode_forcingstep_mod.c      |  41 +------
 .../fmod_int32/farkode_forcingstep_mod.f90    |  28 ++---
 .../fmod_int32/farkode_splittingstep_mod.c    |   5 +-
 .../fmod_int32/farkode_splittingstep_mod.f90  |  12 +-
 .../fmod_int64/farkode_forcingstep_mod.c      |  41 +------
 .../fmod_int64/farkode_forcingstep_mod.f90    |  28 ++---
 .../fmod_int64/farkode_splittingstep_mod.c    |   5 +-
 .../fmod_int64/farkode_splittingstep_mod.f90  |  12 +-
 src/sundials/fmod_int32/fsundials_core_mod.c  |  64 +++++++++-
 .../fmod_int32/fsundials_core_mod.f90         | 114 +++++++++++++++++-
 src/sundials/fmod_int64/fsundials_core_mod.c  |  64 +++++++++-
 .../fmod_int64/fsundials_core_mod.f90         | 114 +++++++++++++++++-
 12 files changed, 376 insertions(+), 152 deletions(-)

diff --git a/src/arkode/fmod_int32/farkode_forcingstep_mod.c b/src/arkode/fmod_int32/farkode_forcingstep_mod.c
index 09f5a679e7..2c4fc34ed0 100644
--- a/src/arkode/fmod_int32/farkode_forcingstep_mod.c
+++ b/src/arkode/fmod_int32/farkode_forcingstep_mod.c
@@ -178,21 +178,6 @@
  { printf("In " DECL ": " MSG); assert(0); RETURNNULL; }
 
 
-enum {
-    SWIG_MEM_OWN = 0x01,
-    SWIG_MEM_RVALUE = 0x02,
-    SWIG_MEM_CONST = 0x04
-};
-
-
-#define SWIG_check_nonnull(SWIG_CLASS_WRAPPER, TYPENAME, FNAME, FUNCNAME, RETURNNULL) \
-  if (!(SWIG_CLASS_WRAPPER).cptr) { \
-    SWIG_exception_impl(FUNCNAME, SWIG_TypeError, \
-                        "Cannot pass null " TYPENAME " (class " FNAME ") " \
-                        "as a reference", RETURNNULL); \
-  }
-
-
 #include <stdio.h>
 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined(_WATCOM)
 # ifndef snprintf
@@ -220,33 +205,17 @@ enum {
 
 #include "arkode/arkode_forcingstep.h"
 
-
-typedef struct {
-    void* cptr;
-    int cmemflags;
-} SwigClassWrapper;
-
-
-SWIGINTERN SwigClassWrapper SwigClassWrapper_uninitialized() {
-    SwigClassWrapper result;
-    result.cptr = NULL;
-    result.cmemflags = 0;
-    return result;
-}
-
-SWIGEXPORT void * _wrap_FForcingStepCreate(SwigClassWrapper const *farg1, SwigClassWrapper const *farg2, double const *farg3, N_Vector farg4, void *farg5) {
+SWIGEXPORT void * _wrap_FForcingStepCreate(void *farg1, void *farg2, double const *farg3, N_Vector farg4, void *farg5) {
   void * fresult ;
-  SUNStepper arg1 ;
-  SUNStepper arg2 ;
+  SUNStepper arg1 = (SUNStepper) 0 ;
+  SUNStepper arg2 = (SUNStepper) 0 ;
   sunrealtype arg3 ;
   N_Vector arg4 = (N_Vector) 0 ;
   SUNContext arg5 = (SUNContext) 0 ;
   void *result = 0 ;
   
-  SWIG_check_nonnull(*farg1, "SUNStepper", "SWIGTYPE_p_SUNStepper", "ForcingStepCreate(SUNStepper,SUNStepper,sunrealtype,N_Vector,SUNContext)", return 0);
-  arg1 = *(SUNStepper *)(farg1->cptr);
-  SWIG_check_nonnull(*farg2, "SUNStepper", "SWIGTYPE_p_SUNStepper", "ForcingStepCreate(SUNStepper,SUNStepper,sunrealtype,N_Vector,SUNContext)", return 0);
-  arg2 = *(SUNStepper *)(farg2->cptr);
+  arg1 = (SUNStepper)(farg1);
+  arg2 = (SUNStepper)(farg2);
   arg3 = (sunrealtype)(*farg3);
   arg4 = (N_Vector)(farg4);
   arg5 = (SUNContext)(farg5);
diff --git a/src/arkode/fmod_int32/farkode_forcingstep_mod.f90 b/src/arkode/fmod_int32/farkode_forcingstep_mod.f90
index 99c8932478..ebeb517b66 100644
--- a/src/arkode/fmod_int32/farkode_forcingstep_mod.f90
+++ b/src/arkode/fmod_int32/farkode_forcingstep_mod.f90
@@ -26,17 +26,6 @@ module farkode_forcingstep_mod
  private
 
  ! DECLARATION CONSTRUCTS
-
- integer, parameter :: swig_cmem_own_bit = 0
- integer, parameter :: swig_cmem_rvalue_bit = 1
- integer, parameter :: swig_cmem_const_bit = 2
- type, bind(C) :: SwigClassWrapper
-  type(C_PTR), public :: cptr = C_NULL_PTR
-  integer(C_INT), public :: cmemflags = 0
- end type
- type, public :: SWIGTYPE_p_SUNStepper
-  type(SwigClassWrapper), public :: swigdata
- end type
  public :: FForcingStepCreate
  public :: FForcingStep_GetNumEvolves
 
@@ -46,9 +35,8 @@ function swigc_FForcingStepCreate(farg1, farg2, farg3, farg4, farg5) &
 bind(C, name="_wrap_FForcingStepCreate") &
 result(fresult)
 use, intrinsic :: ISO_C_BINDING
-import :: swigclasswrapper
-type(SwigClassWrapper) :: farg1
-type(SwigClassWrapper) :: farg2
+type(C_PTR), value :: farg1
+type(C_PTR), value :: farg2
 real(C_DOUBLE), intent(in) :: farg3
 type(C_PTR), value :: farg4
 type(C_PTR), value :: farg5
@@ -74,20 +62,20 @@ function FForcingStepCreate(stepper1, stepper2, t0, y0, sunctx) &
 result(swig_result)
 use, intrinsic :: ISO_C_BINDING
 type(C_PTR) :: swig_result
-type(SWIGTYPE_p_SUNStepper), intent(in) :: stepper1
-type(SWIGTYPE_p_SUNStepper), intent(in) :: stepper2
+type(C_PTR) :: stepper1
+type(C_PTR) :: stepper2
 real(C_DOUBLE), intent(in) :: t0
 type(N_Vector), target, intent(inout) :: y0
 type(C_PTR) :: sunctx
 type(C_PTR) :: fresult 
-type(SwigClassWrapper) :: farg1 
-type(SwigClassWrapper) :: farg2 
+type(C_PTR) :: farg1 
+type(C_PTR) :: farg2 
 real(C_DOUBLE) :: farg3 
 type(C_PTR) :: farg4 
 type(C_PTR) :: farg5 
 
-farg1 = stepper1%swigdata
-farg2 = stepper2%swigdata
+farg1 = stepper1
+farg2 = stepper2
 farg3 = t0
 farg4 = c_loc(y0)
 farg5 = sunctx
diff --git a/src/arkode/fmod_int32/farkode_splittingstep_mod.c b/src/arkode/fmod_int32/farkode_splittingstep_mod.c
index f343e4ce69..413a87802e 100644
--- a/src/arkode/fmod_int32/farkode_splittingstep_mod.c
+++ b/src/arkode/fmod_int32/farkode_splittingstep_mod.c
@@ -691,7 +691,7 @@ SWIGEXPORT SwigClassWrapper _wrap_FSplittingStepCoefficients_SuzukiFractal(int c
 }
 
 
-SWIGEXPORT void * _wrap_FSplittingStepCreate(SwigClassWrapper const *farg1, int const *farg2, double const *farg3, N_Vector farg4, void *farg5) {
+SWIGEXPORT void * _wrap_FSplittingStepCreate(void *farg1, int const *farg2, double const *farg3, N_Vector farg4, void *farg5) {
   void * fresult ;
   SUNStepper *arg1 = (SUNStepper *) 0 ;
   int arg2 ;
@@ -700,8 +700,7 @@ SWIGEXPORT void * _wrap_FSplittingStepCreate(SwigClassWrapper const *farg1, int
   SUNContext arg5 = (SUNContext) 0 ;
   void *result = 0 ;
   
-  SWIG_check_mutable(*farg1, "SUNStepper *", "SWIGTYPE_p_SUNStepper", "SplittingStepCreate(SUNStepper *,int,sunrealtype,N_Vector,SUNContext)", return 0);
-  arg1 = (SUNStepper *)(farg1->cptr);
+  arg1 = (SUNStepper *)(farg1);
   arg2 = (int)(*farg2);
   arg3 = (sunrealtype)(*farg3);
   arg4 = (N_Vector)(farg4);
diff --git a/src/arkode/fmod_int32/farkode_splittingstep_mod.f90 b/src/arkode/fmod_int32/farkode_splittingstep_mod.f90
index da68d91177..13f4e2b7be 100644
--- a/src/arkode/fmod_int32/farkode_splittingstep_mod.f90
+++ b/src/arkode/fmod_int32/farkode_splittingstep_mod.f90
@@ -93,9 +93,6 @@ module farkode_splittingstep_mod
  public :: FSplittingStepCoefficients_ThirdOrderSuzuki
  public :: FSplittingStepCoefficients_TripleJump
  public :: FSplittingStepCoefficients_SuzukiFractal
- type, public :: SWIGTYPE_p_SUNStepper
-  type(SwigClassWrapper), public :: swigdata
- end type
  public :: FSplittingStepCreate
  public :: FSplittingStep_SetCoefficients
  public :: FSplittingStep_GetNumEvolves
@@ -378,8 +375,7 @@ function swigc_FSplittingStepCreate(farg1, farg2, farg3, farg4, farg5) &
 bind(C, name="_wrap_FSplittingStepCreate") &
 result(fresult)
 use, intrinsic :: ISO_C_BINDING
-import :: swigclasswrapper
-type(SwigClassWrapper) :: farg1
+type(C_PTR), value :: farg1
 integer(C_INT), intent(in) :: farg2
 real(C_DOUBLE), intent(in) :: farg3
 type(C_PTR), value :: farg4
@@ -854,19 +850,19 @@ function FSplittingStepCreate(steppers, partitions, t0, y0, sunctx) &
 result(swig_result)
 use, intrinsic :: ISO_C_BINDING
 type(C_PTR) :: swig_result
-class(SWIGTYPE_p_SUNStepper), intent(in) :: steppers
+type(C_PTR), target, intent(inout) :: steppers
 integer(C_INT), intent(in) :: partitions
 real(C_DOUBLE), intent(in) :: t0
 type(N_Vector), target, intent(inout) :: y0
 type(C_PTR) :: sunctx
 type(C_PTR) :: fresult 
-type(SwigClassWrapper) :: farg1 
+type(C_PTR) :: farg1 
 integer(C_INT) :: farg2 
 real(C_DOUBLE) :: farg3 
 type(C_PTR) :: farg4 
 type(C_PTR) :: farg5 
 
-farg1 = steppers%swigdata
+farg1 = c_loc(steppers)
 farg2 = partitions
 farg3 = t0
 farg4 = c_loc(y0)
diff --git a/src/arkode/fmod_int64/farkode_forcingstep_mod.c b/src/arkode/fmod_int64/farkode_forcingstep_mod.c
index 09f5a679e7..2c4fc34ed0 100644
--- a/src/arkode/fmod_int64/farkode_forcingstep_mod.c
+++ b/src/arkode/fmod_int64/farkode_forcingstep_mod.c
@@ -178,21 +178,6 @@
  { printf("In " DECL ": " MSG); assert(0); RETURNNULL; }
 
 
-enum {
-    SWIG_MEM_OWN = 0x01,
-    SWIG_MEM_RVALUE = 0x02,
-    SWIG_MEM_CONST = 0x04
-};
-
-
-#define SWIG_check_nonnull(SWIG_CLASS_WRAPPER, TYPENAME, FNAME, FUNCNAME, RETURNNULL) \
-  if (!(SWIG_CLASS_WRAPPER).cptr) { \
-    SWIG_exception_impl(FUNCNAME, SWIG_TypeError, \
-                        "Cannot pass null " TYPENAME " (class " FNAME ") " \
-                        "as a reference", RETURNNULL); \
-  }
-
-
 #include <stdio.h>
 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined(_WATCOM)
 # ifndef snprintf
@@ -220,33 +205,17 @@ enum {
 
 #include "arkode/arkode_forcingstep.h"
 
-
-typedef struct {
-    void* cptr;
-    int cmemflags;
-} SwigClassWrapper;
-
-
-SWIGINTERN SwigClassWrapper SwigClassWrapper_uninitialized() {
-    SwigClassWrapper result;
-    result.cptr = NULL;
-    result.cmemflags = 0;
-    return result;
-}
-
-SWIGEXPORT void * _wrap_FForcingStepCreate(SwigClassWrapper const *farg1, SwigClassWrapper const *farg2, double const *farg3, N_Vector farg4, void *farg5) {
+SWIGEXPORT void * _wrap_FForcingStepCreate(void *farg1, void *farg2, double const *farg3, N_Vector farg4, void *farg5) {
   void * fresult ;
-  SUNStepper arg1 ;
-  SUNStepper arg2 ;
+  SUNStepper arg1 = (SUNStepper) 0 ;
+  SUNStepper arg2 = (SUNStepper) 0 ;
   sunrealtype arg3 ;
   N_Vector arg4 = (N_Vector) 0 ;
   SUNContext arg5 = (SUNContext) 0 ;
   void *result = 0 ;
   
-  SWIG_check_nonnull(*farg1, "SUNStepper", "SWIGTYPE_p_SUNStepper", "ForcingStepCreate(SUNStepper,SUNStepper,sunrealtype,N_Vector,SUNContext)", return 0);
-  arg1 = *(SUNStepper *)(farg1->cptr);
-  SWIG_check_nonnull(*farg2, "SUNStepper", "SWIGTYPE_p_SUNStepper", "ForcingStepCreate(SUNStepper,SUNStepper,sunrealtype,N_Vector,SUNContext)", return 0);
-  arg2 = *(SUNStepper *)(farg2->cptr);
+  arg1 = (SUNStepper)(farg1);
+  arg2 = (SUNStepper)(farg2);
   arg3 = (sunrealtype)(*farg3);
   arg4 = (N_Vector)(farg4);
   arg5 = (SUNContext)(farg5);
diff --git a/src/arkode/fmod_int64/farkode_forcingstep_mod.f90 b/src/arkode/fmod_int64/farkode_forcingstep_mod.f90
index 99c8932478..ebeb517b66 100644
--- a/src/arkode/fmod_int64/farkode_forcingstep_mod.f90
+++ b/src/arkode/fmod_int64/farkode_forcingstep_mod.f90
@@ -26,17 +26,6 @@ module farkode_forcingstep_mod
  private
 
  ! DECLARATION CONSTRUCTS
-
- integer, parameter :: swig_cmem_own_bit = 0
- integer, parameter :: swig_cmem_rvalue_bit = 1
- integer, parameter :: swig_cmem_const_bit = 2
- type, bind(C) :: SwigClassWrapper
-  type(C_PTR), public :: cptr = C_NULL_PTR
-  integer(C_INT), public :: cmemflags = 0
- end type
- type, public :: SWIGTYPE_p_SUNStepper
-  type(SwigClassWrapper), public :: swigdata
- end type
  public :: FForcingStepCreate
  public :: FForcingStep_GetNumEvolves
 
@@ -46,9 +35,8 @@ function swigc_FForcingStepCreate(farg1, farg2, farg3, farg4, farg5) &
 bind(C, name="_wrap_FForcingStepCreate") &
 result(fresult)
 use, intrinsic :: ISO_C_BINDING
-import :: swigclasswrapper
-type(SwigClassWrapper) :: farg1
-type(SwigClassWrapper) :: farg2
+type(C_PTR), value :: farg1
+type(C_PTR), value :: farg2
 real(C_DOUBLE), intent(in) :: farg3
 type(C_PTR), value :: farg4
 type(C_PTR), value :: farg5
@@ -74,20 +62,20 @@ function FForcingStepCreate(stepper1, stepper2, t0, y0, sunctx) &
 result(swig_result)
 use, intrinsic :: ISO_C_BINDING
 type(C_PTR) :: swig_result
-type(SWIGTYPE_p_SUNStepper), intent(in) :: stepper1
-type(SWIGTYPE_p_SUNStepper), intent(in) :: stepper2
+type(C_PTR) :: stepper1
+type(C_PTR) :: stepper2
 real(C_DOUBLE), intent(in) :: t0
 type(N_Vector), target, intent(inout) :: y0
 type(C_PTR) :: sunctx
 type(C_PTR) :: fresult 
-type(SwigClassWrapper) :: farg1 
-type(SwigClassWrapper) :: farg2 
+type(C_PTR) :: farg1 
+type(C_PTR) :: farg2 
 real(C_DOUBLE) :: farg3 
 type(C_PTR) :: farg4 
 type(C_PTR) :: farg5 
 
-farg1 = stepper1%swigdata
-farg2 = stepper2%swigdata
+farg1 = stepper1
+farg2 = stepper2
 farg3 = t0
 farg4 = c_loc(y0)
 farg5 = sunctx
diff --git a/src/arkode/fmod_int64/farkode_splittingstep_mod.c b/src/arkode/fmod_int64/farkode_splittingstep_mod.c
index f343e4ce69..413a87802e 100644
--- a/src/arkode/fmod_int64/farkode_splittingstep_mod.c
+++ b/src/arkode/fmod_int64/farkode_splittingstep_mod.c
@@ -691,7 +691,7 @@ SWIGEXPORT SwigClassWrapper _wrap_FSplittingStepCoefficients_SuzukiFractal(int c
 }
 
 
-SWIGEXPORT void * _wrap_FSplittingStepCreate(SwigClassWrapper const *farg1, int const *farg2, double const *farg3, N_Vector farg4, void *farg5) {
+SWIGEXPORT void * _wrap_FSplittingStepCreate(void *farg1, int const *farg2, double const *farg3, N_Vector farg4, void *farg5) {
   void * fresult ;
   SUNStepper *arg1 = (SUNStepper *) 0 ;
   int arg2 ;
@@ -700,8 +700,7 @@ SWIGEXPORT void * _wrap_FSplittingStepCreate(SwigClassWrapper const *farg1, int
   SUNContext arg5 = (SUNContext) 0 ;
   void *result = 0 ;
   
-  SWIG_check_mutable(*farg1, "SUNStepper *", "SWIGTYPE_p_SUNStepper", "SplittingStepCreate(SUNStepper *,int,sunrealtype,N_Vector,SUNContext)", return 0);
-  arg1 = (SUNStepper *)(farg1->cptr);
+  arg1 = (SUNStepper *)(farg1);
   arg2 = (int)(*farg2);
   arg3 = (sunrealtype)(*farg3);
   arg4 = (N_Vector)(farg4);
diff --git a/src/arkode/fmod_int64/farkode_splittingstep_mod.f90 b/src/arkode/fmod_int64/farkode_splittingstep_mod.f90
index da68d91177..13f4e2b7be 100644
--- a/src/arkode/fmod_int64/farkode_splittingstep_mod.f90
+++ b/src/arkode/fmod_int64/farkode_splittingstep_mod.f90
@@ -93,9 +93,6 @@ module farkode_splittingstep_mod
  public :: FSplittingStepCoefficients_ThirdOrderSuzuki
  public :: FSplittingStepCoefficients_TripleJump
  public :: FSplittingStepCoefficients_SuzukiFractal
- type, public :: SWIGTYPE_p_SUNStepper
-  type(SwigClassWrapper), public :: swigdata
- end type
  public :: FSplittingStepCreate
  public :: FSplittingStep_SetCoefficients
  public :: FSplittingStep_GetNumEvolves
@@ -378,8 +375,7 @@ function swigc_FSplittingStepCreate(farg1, farg2, farg3, farg4, farg5) &
 bind(C, name="_wrap_FSplittingStepCreate") &
 result(fresult)
 use, intrinsic :: ISO_C_BINDING
-import :: swigclasswrapper
-type(SwigClassWrapper) :: farg1
+type(C_PTR), value :: farg1
 integer(C_INT), intent(in) :: farg2
 real(C_DOUBLE), intent(in) :: farg3
 type(C_PTR), value :: farg4
@@ -854,19 +850,19 @@ function FSplittingStepCreate(steppers, partitions, t0, y0, sunctx) &
 result(swig_result)
 use, intrinsic :: ISO_C_BINDING
 type(C_PTR) :: swig_result
-class(SWIGTYPE_p_SUNStepper), intent(in) :: steppers
+type(C_PTR), target, intent(inout) :: steppers
 integer(C_INT), intent(in) :: partitions
 real(C_DOUBLE), intent(in) :: t0
 type(N_Vector), target, intent(inout) :: y0
 type(C_PTR) :: sunctx
 type(C_PTR) :: fresult 
-type(SwigClassWrapper) :: farg1 
+type(C_PTR) :: farg1 
 integer(C_INT) :: farg2 
 real(C_DOUBLE) :: farg3 
 type(C_PTR) :: farg4 
 type(C_PTR) :: farg5 
 
-farg1 = steppers%swigdata
+farg1 = c_loc(steppers)
 farg2 = partitions
 farg3 = t0
 farg4 = c_loc(y0)
diff --git a/src/sundials/fmod_int32/fsundials_core_mod.c b/src/sundials/fmod_int32/fsundials_core_mod.c
index cd93f56314..b0a7ed7876 100644
--- a/src/sundials/fmod_int32/fsundials_core_mod.c
+++ b/src/sundials/fmod_int32/fsundials_core_mod.c
@@ -2782,15 +2782,29 @@ SWIGEXPORT int _wrap_FSUNStepper_SetStopTimeFn(void *farg1, SUNStepperSetStopTim
 }
 
 
-SWIGEXPORT int _wrap_FSUNStepper_SetForcingFn(void *farg1, SUNStepperSetForcingFn farg2) {
+SWIGEXPORT int _wrap_FSUNStepper_SetStepDirectionFn(void *farg1, SUNStepperSetStepDirectionFn farg2) {
   int fresult ;
   SUNStepper arg1 = (SUNStepper) 0 ;
-  SUNStepperSetForcingFn arg2 = (SUNStepperSetForcingFn) 0 ;
+  SUNStepperSetStepDirectionFn arg2 = (SUNStepperSetStepDirectionFn) 0 ;
   SUNErrCode result;
   
   arg1 = (SUNStepper)(farg1);
-  arg2 = (SUNStepperSetForcingFn)(farg2);
-  result = (SUNErrCode)SUNStepper_SetForcingFn(arg1,arg2);
+  arg2 = (SUNStepperSetStepDirectionFn)(farg2);
+  result = (SUNErrCode)SUNStepper_SetStepDirectionFn(arg1,arg2);
+  fresult = (SUNErrCode)(result);
+  return fresult;
+}
+
+
+SWIGEXPORT int _wrap_FSUNStepper_SetGetStepDirectionFn(void *farg1, SUNStepperGetStepDirectionFn farg2) {
+  int fresult ;
+  SUNStepper arg1 = (SUNStepper) 0 ;
+  SUNStepperGetStepDirectionFn arg2 = (SUNStepperGetStepDirectionFn) 0 ;
+  SUNErrCode result;
+  
+  arg1 = (SUNStepper)(farg1);
+  arg2 = (SUNStepperGetStepDirectionFn)(farg2);
+  result = (SUNErrCode)SUNStepper_SetGetStepDirectionFn(arg1,arg2);
   fresult = (SUNErrCode)(result);
   return fresult;
 }
@@ -2886,6 +2900,48 @@ SWIGEXPORT int _wrap_FSUNStepper_SetStopTime(void *farg1, double const *farg2) {
 }
 
 
+SWIGEXPORT int _wrap_FSUNStepper_SetForcingFn(void *farg1, SUNStepperSetForcingFn farg2) {
+  int fresult ;
+  SUNStepper arg1 = (SUNStepper) 0 ;
+  SUNStepperSetForcingFn arg2 = (SUNStepperSetForcingFn) 0 ;
+  SUNErrCode result;
+  
+  arg1 = (SUNStepper)(farg1);
+  arg2 = (SUNStepperSetForcingFn)(farg2);
+  result = (SUNErrCode)SUNStepper_SetForcingFn(arg1,arg2);
+  fresult = (SUNErrCode)(result);
+  return fresult;
+}
+
+
+SWIGEXPORT int _wrap_FSUNStepper_SetStepDirection(void *farg1, double const *farg2) {
+  int fresult ;
+  SUNStepper arg1 = (SUNStepper) 0 ;
+  sunrealtype arg2 ;
+  SUNErrCode result;
+  
+  arg1 = (SUNStepper)(farg1);
+  arg2 = (sunrealtype)(*farg2);
+  result = (SUNErrCode)SUNStepper_SetStepDirection(arg1,arg2);
+  fresult = (SUNErrCode)(result);
+  return fresult;
+}
+
+
+SWIGEXPORT int _wrap_FSUNStepper_GetStepDirection(void *farg1, double *farg2) {
+  int fresult ;
+  SUNStepper arg1 = (SUNStepper) 0 ;
+  sunrealtype *arg2 = (sunrealtype *) 0 ;
+  SUNErrCode result;
+  
+  arg1 = (SUNStepper)(farg1);
+  arg2 = (sunrealtype *)(farg2);
+  result = (SUNErrCode)SUNStepper_GetStepDirection(arg1,arg2);
+  fresult = (SUNErrCode)(result);
+  return fresult;
+}
+
+
 SWIGEXPORT int _wrap_FSUNStepper_SetForcing(void *farg1, double const *farg2, double const *farg3, void *farg4, int const *farg5) {
   int fresult ;
   SUNStepper arg1 = (SUNStepper) 0 ;
diff --git a/src/sundials/fmod_int32/fsundials_core_mod.f90 b/src/sundials/fmod_int32/fsundials_core_mod.f90
index 42ab3464c8..fde9c4ba7b 100644
--- a/src/sundials/fmod_int32/fsundials_core_mod.f90
+++ b/src/sundials/fmod_int32/fsundials_core_mod.f90
@@ -553,12 +553,16 @@ module fsundials_core_mod
  public :: FSUNStepper_SetFullRhsFn
  public :: FSUNStepper_SetResetFn
  public :: FSUNStepper_SetStopTimeFn
- public :: FSUNStepper_SetForcingFn
+ public :: FSUNStepper_SetStepDirectionFn
+ public :: FSUNStepper_SetGetStepDirectionFn
  public :: FSUNStepper_Evolve
  public :: FSUNStepper_OneStep
  public :: FSUNStepper_TryStep
  public :: FSUNStepper_Reset
  public :: FSUNStepper_SetStopTime
+ public :: FSUNStepper_SetForcingFn
+ public :: FSUNStepper_SetStepDirection
+ public :: FSUNStepper_GetStepDirection
  public :: FSUNStepper_SetForcing
 
 ! WRAPPER DECLARATIONS
@@ -2147,8 +2151,17 @@ function swigc_FSUNStepper_SetStopTimeFn(farg1, farg2) &
 integer(C_INT) :: fresult
 end function
 
-function swigc_FSUNStepper_SetForcingFn(farg1, farg2) &
-bind(C, name="_wrap_FSUNStepper_SetForcingFn") &
+function swigc_FSUNStepper_SetStepDirectionFn(farg1, farg2) &
+bind(C, name="_wrap_FSUNStepper_SetStepDirectionFn") &
+result(fresult)
+use, intrinsic :: ISO_C_BINDING
+type(C_PTR), value :: farg1
+type(C_FUNPTR), value :: farg2
+integer(C_INT) :: fresult
+end function
+
+function swigc_FSUNStepper_SetGetStepDirectionFn(farg1, farg2) &
+bind(C, name="_wrap_FSUNStepper_SetGetStepDirectionFn") &
 result(fresult)
 use, intrinsic :: ISO_C_BINDING
 type(C_PTR), value :: farg1
@@ -2211,6 +2224,33 @@ function swigc_FSUNStepper_SetStopTime(farg1, farg2) &
 integer(C_INT) :: fresult
 end function
 
+function swigc_FSUNStepper_SetForcingFn(farg1, farg2) &
+bind(C, name="_wrap_FSUNStepper_SetForcingFn") &
+result(fresult)
+use, intrinsic :: ISO_C_BINDING
+type(C_PTR), value :: farg1
+type(C_FUNPTR), value :: farg2
+integer(C_INT) :: fresult
+end function
+
+function swigc_FSUNStepper_SetStepDirection(farg1, farg2) &
+bind(C, name="_wrap_FSUNStepper_SetStepDirection") &
+result(fresult)
+use, intrinsic :: ISO_C_BINDING
+type(C_PTR), value :: farg1
+real(C_DOUBLE), intent(in) :: farg2
+integer(C_INT) :: fresult
+end function
+
+function swigc_FSUNStepper_GetStepDirection(farg1, farg2) &
+bind(C, name="_wrap_FSUNStepper_GetStepDirection") &
+result(fresult)
+use, intrinsic :: ISO_C_BINDING
+type(C_PTR), value :: farg1
+type(C_PTR), value :: farg2
+integer(C_INT) :: fresult
+end function
+
 function swigc_FSUNStepper_SetForcing(farg1, farg2, farg3, farg4, farg5) &
 bind(C, name="_wrap_FSUNStepper_SetForcing") &
 result(fresult)
@@ -5121,7 +5161,7 @@ function FSUNStepper_SetStopTimeFn(stepper, fn) &
 swig_result = fresult
 end function
 
-function FSUNStepper_SetForcingFn(stepper, fn) &
+function FSUNStepper_SetStepDirectionFn(stepper, fn) &
 result(swig_result)
 use, intrinsic :: ISO_C_BINDING
 integer(C_INT) :: swig_result
@@ -5133,7 +5173,23 @@ function FSUNStepper_SetForcingFn(stepper, fn) &
 
 farg1 = stepper
 farg2 = fn
-fresult = swigc_FSUNStepper_SetForcingFn(farg1, farg2)
+fresult = swigc_FSUNStepper_SetStepDirectionFn(farg1, farg2)
+swig_result = fresult
+end function
+
+function FSUNStepper_SetGetStepDirectionFn(stepper, fn) &
+result(swig_result)
+use, intrinsic :: ISO_C_BINDING
+integer(C_INT) :: swig_result
+type(C_PTR) :: stepper
+type(C_FUNPTR), intent(in), value :: fn
+integer(C_INT) :: fresult 
+type(C_PTR) :: farg1 
+type(C_FUNPTR) :: farg2 
+
+farg1 = stepper
+farg2 = fn
+fresult = swigc_FSUNStepper_SetGetStepDirectionFn(farg1, farg2)
 swig_result = fresult
 end function
 
@@ -5247,6 +5303,54 @@ function FSUNStepper_SetStopTime(stepper, tstop) &
 swig_result = fresult
 end function
 
+function FSUNStepper_SetForcingFn(stepper, fn) &
+result(swig_result)
+use, intrinsic :: ISO_C_BINDING
+integer(C_INT) :: swig_result
+type(C_PTR) :: stepper
+type(C_FUNPTR), intent(in), value :: fn
+integer(C_INT) :: fresult 
+type(C_PTR) :: farg1 
+type(C_FUNPTR) :: farg2 
+
+farg1 = stepper
+farg2 = fn
+fresult = swigc_FSUNStepper_SetForcingFn(farg1, farg2)
+swig_result = fresult
+end function
+
+function FSUNStepper_SetStepDirection(stepper, stepdir) &
+result(swig_result)
+use, intrinsic :: ISO_C_BINDING
+integer(C_INT) :: swig_result
+type(C_PTR) :: stepper
+real(C_DOUBLE), intent(in) :: stepdir
+integer(C_INT) :: fresult 
+type(C_PTR) :: farg1 
+real(C_DOUBLE) :: farg2 
+
+farg1 = stepper
+farg2 = stepdir
+fresult = swigc_FSUNStepper_SetStepDirection(farg1, farg2)
+swig_result = fresult
+end function
+
+function FSUNStepper_GetStepDirection(stepper, stepdir) &
+result(swig_result)
+use, intrinsic :: ISO_C_BINDING
+integer(C_INT) :: swig_result
+type(C_PTR) :: stepper
+real(C_DOUBLE), dimension(*), target, intent(inout) :: stepdir
+integer(C_INT) :: fresult 
+type(C_PTR) :: farg1 
+type(C_PTR) :: farg2 
+
+farg1 = stepper
+farg2 = c_loc(stepdir(1))
+fresult = swigc_FSUNStepper_GetStepDirection(farg1, farg2)
+swig_result = fresult
+end function
+
 function FSUNStepper_SetForcing(stepper, tshift, tscale, forcing, nforcing) &
 result(swig_result)
 use, intrinsic :: ISO_C_BINDING
diff --git a/src/sundials/fmod_int64/fsundials_core_mod.c b/src/sundials/fmod_int64/fsundials_core_mod.c
index a0e410c75b..814fda5df8 100644
--- a/src/sundials/fmod_int64/fsundials_core_mod.c
+++ b/src/sundials/fmod_int64/fsundials_core_mod.c
@@ -2782,15 +2782,29 @@ SWIGEXPORT int _wrap_FSUNStepper_SetStopTimeFn(void *farg1, SUNStepperSetStopTim
 }
 
 
-SWIGEXPORT int _wrap_FSUNStepper_SetForcingFn(void *farg1, SUNStepperSetForcingFn farg2) {
+SWIGEXPORT int _wrap_FSUNStepper_SetStepDirectionFn(void *farg1, SUNStepperSetStepDirectionFn farg2) {
   int fresult ;
   SUNStepper arg1 = (SUNStepper) 0 ;
-  SUNStepperSetForcingFn arg2 = (SUNStepperSetForcingFn) 0 ;
+  SUNStepperSetStepDirectionFn arg2 = (SUNStepperSetStepDirectionFn) 0 ;
   SUNErrCode result;
   
   arg1 = (SUNStepper)(farg1);
-  arg2 = (SUNStepperSetForcingFn)(farg2);
-  result = (SUNErrCode)SUNStepper_SetForcingFn(arg1,arg2);
+  arg2 = (SUNStepperSetStepDirectionFn)(farg2);
+  result = (SUNErrCode)SUNStepper_SetStepDirectionFn(arg1,arg2);
+  fresult = (SUNErrCode)(result);
+  return fresult;
+}
+
+
+SWIGEXPORT int _wrap_FSUNStepper_SetGetStepDirectionFn(void *farg1, SUNStepperGetStepDirectionFn farg2) {
+  int fresult ;
+  SUNStepper arg1 = (SUNStepper) 0 ;
+  SUNStepperGetStepDirectionFn arg2 = (SUNStepperGetStepDirectionFn) 0 ;
+  SUNErrCode result;
+  
+  arg1 = (SUNStepper)(farg1);
+  arg2 = (SUNStepperGetStepDirectionFn)(farg2);
+  result = (SUNErrCode)SUNStepper_SetGetStepDirectionFn(arg1,arg2);
   fresult = (SUNErrCode)(result);
   return fresult;
 }
@@ -2886,6 +2900,48 @@ SWIGEXPORT int _wrap_FSUNStepper_SetStopTime(void *farg1, double const *farg2) {
 }
 
 
+SWIGEXPORT int _wrap_FSUNStepper_SetForcingFn(void *farg1, SUNStepperSetForcingFn farg2) {
+  int fresult ;
+  SUNStepper arg1 = (SUNStepper) 0 ;
+  SUNStepperSetForcingFn arg2 = (SUNStepperSetForcingFn) 0 ;
+  SUNErrCode result;
+  
+  arg1 = (SUNStepper)(farg1);
+  arg2 = (SUNStepperSetForcingFn)(farg2);
+  result = (SUNErrCode)SUNStepper_SetForcingFn(arg1,arg2);
+  fresult = (SUNErrCode)(result);
+  return fresult;
+}
+
+
+SWIGEXPORT int _wrap_FSUNStepper_SetStepDirection(void *farg1, double const *farg2) {
+  int fresult ;
+  SUNStepper arg1 = (SUNStepper) 0 ;
+  sunrealtype arg2 ;
+  SUNErrCode result;
+  
+  arg1 = (SUNStepper)(farg1);
+  arg2 = (sunrealtype)(*farg2);
+  result = (SUNErrCode)SUNStepper_SetStepDirection(arg1,arg2);
+  fresult = (SUNErrCode)(result);
+  return fresult;
+}
+
+
+SWIGEXPORT int _wrap_FSUNStepper_GetStepDirection(void *farg1, double *farg2) {
+  int fresult ;
+  SUNStepper arg1 = (SUNStepper) 0 ;
+  sunrealtype *arg2 = (sunrealtype *) 0 ;
+  SUNErrCode result;
+  
+  arg1 = (SUNStepper)(farg1);
+  arg2 = (sunrealtype *)(farg2);
+  result = (SUNErrCode)SUNStepper_GetStepDirection(arg1,arg2);
+  fresult = (SUNErrCode)(result);
+  return fresult;
+}
+
+
 SWIGEXPORT int _wrap_FSUNStepper_SetForcing(void *farg1, double const *farg2, double const *farg3, void *farg4, int const *farg5) {
   int fresult ;
   SUNStepper arg1 = (SUNStepper) 0 ;
diff --git a/src/sundials/fmod_int64/fsundials_core_mod.f90 b/src/sundials/fmod_int64/fsundials_core_mod.f90
index 34cc744eed..a9bfae9bfc 100644
--- a/src/sundials/fmod_int64/fsundials_core_mod.f90
+++ b/src/sundials/fmod_int64/fsundials_core_mod.f90
@@ -553,12 +553,16 @@ module fsundials_core_mod
  public :: FSUNStepper_SetFullRhsFn
  public :: FSUNStepper_SetResetFn
  public :: FSUNStepper_SetStopTimeFn
- public :: FSUNStepper_SetForcingFn
+ public :: FSUNStepper_SetStepDirectionFn
+ public :: FSUNStepper_SetGetStepDirectionFn
  public :: FSUNStepper_Evolve
  public :: FSUNStepper_OneStep
  public :: FSUNStepper_TryStep
  public :: FSUNStepper_Reset
  public :: FSUNStepper_SetStopTime
+ public :: FSUNStepper_SetForcingFn
+ public :: FSUNStepper_SetStepDirection
+ public :: FSUNStepper_GetStepDirection
  public :: FSUNStepper_SetForcing
 
 ! WRAPPER DECLARATIONS
@@ -2147,8 +2151,17 @@ function swigc_FSUNStepper_SetStopTimeFn(farg1, farg2) &
 integer(C_INT) :: fresult
 end function
 
-function swigc_FSUNStepper_SetForcingFn(farg1, farg2) &
-bind(C, name="_wrap_FSUNStepper_SetForcingFn") &
+function swigc_FSUNStepper_SetStepDirectionFn(farg1, farg2) &
+bind(C, name="_wrap_FSUNStepper_SetStepDirectionFn") &
+result(fresult)
+use, intrinsic :: ISO_C_BINDING
+type(C_PTR), value :: farg1
+type(C_FUNPTR), value :: farg2
+integer(C_INT) :: fresult
+end function
+
+function swigc_FSUNStepper_SetGetStepDirectionFn(farg1, farg2) &
+bind(C, name="_wrap_FSUNStepper_SetGetStepDirectionFn") &
 result(fresult)
 use, intrinsic :: ISO_C_BINDING
 type(C_PTR), value :: farg1
@@ -2211,6 +2224,33 @@ function swigc_FSUNStepper_SetStopTime(farg1, farg2) &
 integer(C_INT) :: fresult
 end function
 
+function swigc_FSUNStepper_SetForcingFn(farg1, farg2) &
+bind(C, name="_wrap_FSUNStepper_SetForcingFn") &
+result(fresult)
+use, intrinsic :: ISO_C_BINDING
+type(C_PTR), value :: farg1
+type(C_FUNPTR), value :: farg2
+integer(C_INT) :: fresult
+end function
+
+function swigc_FSUNStepper_SetStepDirection(farg1, farg2) &
+bind(C, name="_wrap_FSUNStepper_SetStepDirection") &
+result(fresult)
+use, intrinsic :: ISO_C_BINDING
+type(C_PTR), value :: farg1
+real(C_DOUBLE), intent(in) :: farg2
+integer(C_INT) :: fresult
+end function
+
+function swigc_FSUNStepper_GetStepDirection(farg1, farg2) &
+bind(C, name="_wrap_FSUNStepper_GetStepDirection") &
+result(fresult)
+use, intrinsic :: ISO_C_BINDING
+type(C_PTR), value :: farg1
+type(C_PTR), value :: farg2
+integer(C_INT) :: fresult
+end function
+
 function swigc_FSUNStepper_SetForcing(farg1, farg2, farg3, farg4, farg5) &
 bind(C, name="_wrap_FSUNStepper_SetForcing") &
 result(fresult)
@@ -5121,7 +5161,7 @@ function FSUNStepper_SetStopTimeFn(stepper, fn) &
 swig_result = fresult
 end function
 
-function FSUNStepper_SetForcingFn(stepper, fn) &
+function FSUNStepper_SetStepDirectionFn(stepper, fn) &
 result(swig_result)
 use, intrinsic :: ISO_C_BINDING
 integer(C_INT) :: swig_result
@@ -5133,7 +5173,23 @@ function FSUNStepper_SetForcingFn(stepper, fn) &
 
 farg1 = stepper
 farg2 = fn
-fresult = swigc_FSUNStepper_SetForcingFn(farg1, farg2)
+fresult = swigc_FSUNStepper_SetStepDirectionFn(farg1, farg2)
+swig_result = fresult
+end function
+
+function FSUNStepper_SetGetStepDirectionFn(stepper, fn) &
+result(swig_result)
+use, intrinsic :: ISO_C_BINDING
+integer(C_INT) :: swig_result
+type(C_PTR) :: stepper
+type(C_FUNPTR), intent(in), value :: fn
+integer(C_INT) :: fresult 
+type(C_PTR) :: farg1 
+type(C_FUNPTR) :: farg2 
+
+farg1 = stepper
+farg2 = fn
+fresult = swigc_FSUNStepper_SetGetStepDirectionFn(farg1, farg2)
 swig_result = fresult
 end function
 
@@ -5247,6 +5303,54 @@ function FSUNStepper_SetStopTime(stepper, tstop) &
 swig_result = fresult
 end function
 
+function FSUNStepper_SetForcingFn(stepper, fn) &
+result(swig_result)
+use, intrinsic :: ISO_C_BINDING
+integer(C_INT) :: swig_result
+type(C_PTR) :: stepper
+type(C_FUNPTR), intent(in), value :: fn
+integer(C_INT) :: fresult 
+type(C_PTR) :: farg1 
+type(C_FUNPTR) :: farg2 
+
+farg1 = stepper
+farg2 = fn
+fresult = swigc_FSUNStepper_SetForcingFn(farg1, farg2)
+swig_result = fresult
+end function
+
+function FSUNStepper_SetStepDirection(stepper, stepdir) &
+result(swig_result)
+use, intrinsic :: ISO_C_BINDING
+integer(C_INT) :: swig_result
+type(C_PTR) :: stepper
+real(C_DOUBLE), intent(in) :: stepdir
+integer(C_INT) :: fresult 
+type(C_PTR) :: farg1 
+real(C_DOUBLE) :: farg2 
+
+farg1 = stepper
+farg2 = stepdir
+fresult = swigc_FSUNStepper_SetStepDirection(farg1, farg2)
+swig_result = fresult
+end function
+
+function FSUNStepper_GetStepDirection(stepper, stepdir) &
+result(swig_result)
+use, intrinsic :: ISO_C_BINDING
+integer(C_INT) :: swig_result
+type(C_PTR) :: stepper
+real(C_DOUBLE), dimension(*), target, intent(inout) :: stepdir
+integer(C_INT) :: fresult 
+type(C_PTR) :: farg1 
+type(C_PTR) :: farg2 
+
+farg1 = stepper
+farg2 = c_loc(stepdir(1))
+fresult = swigc_FSUNStepper_GetStepDirection(farg1, farg2)
+swig_result = fresult
+end function
+
 function FSUNStepper_SetForcing(stepper, tshift, tscale, forcing, nforcing) &
 result(swig_result)
 use, intrinsic :: ISO_C_BINDING