field_descriptor.cpp compiles

src/field_descriptor.cpp

@@ -25,7 +25,8 @@
 #include "base.hpp"
 #include "field_descriptor.hpp"
 
-field_descriptor::field_descriptor(
+template <class rnumber>
+field_descriptor<rnumber>::field_descriptor(
         int ndims,
         int *n,
         MPI_Datatype element_type,
@@ -46,7 +47,7 @@ field_descriptor::field_descriptor(
     ptrdiff_t local_n0, local_0_start;
     for (int i = 0; i < this->ndims; i++)
         nfftw[i] = n[i];
-    this->local_size = fftwf_mpi_local_size_many(
+    this->local_size = fftw_mpi_local_size_many(
             this->ndims,
             nfftw,
             1,
@@ -183,7 +184,8 @@ field_descriptor::field_descriptor(
     delete[] local_rank;
 }
 
-field_descriptor::~field_descriptor()
+template <class rnumber>
+field_descriptor<rnumber>::~field_descriptor()
 {
     DEBUG_MSG_WAIT(
             MPI_COMM_WORLD,
@@ -211,7 +213,8 @@ field_descriptor::~field_descriptor()
     delete[] this->rank;
 }
 
-int field_descriptor::read(
+template<>
+int field_descriptor<float>::read(
         const char *fname,
         void *buffer)
 {
@@ -250,7 +253,8 @@ int field_descriptor::read(
     return EXIT_SUCCESS;
 }
 
-int field_descriptor::write(
+template<>
+int field_descriptor<float>::write(
         const char *fname,
         void *buffer)
 {
@@ -290,7 +294,8 @@ int field_descriptor::write(
     return EXIT_SUCCESS;
 }
 
-int field_descriptor::transpose(
+template<>
+int field_descriptor<float>::transpose(
         float *input,
         float *output)
 {
@@ -327,7 +332,8 @@ int field_descriptor::transpose(
     return EXIT_SUCCESS;
 }
 
-int field_descriptor::transpose(
+template<>
+int field_descriptor<float>::transpose(
         fftwf_complex *input,
         fftwf_complex *output)
 {
@@ -381,7 +387,8 @@ int field_descriptor::transpose(
     return EXIT_SUCCESS;
 }
 
-int field_descriptor::interleave(
+template<>
+int field_descriptor<float>::interleave(
         float *a,
         int dim)
 {
@@ -411,7 +418,8 @@ int field_descriptor::interleave(
     return EXIT_SUCCESS;
 }
 
-int field_descriptor::interleave(
+template<>
+int field_descriptor<float>::interleave(
         fftwf_complex *a,
         int dim)
 {
@@ -438,7 +446,8 @@ int field_descriptor::interleave(
     return EXIT_SUCCESS;
 }
 
-int field_descriptor::switch_endianness(
+template<>
+int field_descriptor<float>::switch_endianness(
         float *a)
 {
     for (int i = 0; i < this->local_size; i++)
@@ -449,7 +458,8 @@ int field_descriptor::switch_endianness(
     return EXIT_SUCCESS;
 }
 
-int field_descriptor::switch_endianness(
+template<>
+int field_descriptor<float>::switch_endianness(
         fftwf_complex *b)
 {
     float *a = (float*)b;
@@ -463,11 +473,12 @@ int field_descriptor::switch_endianness(
     return EXIT_SUCCESS;
 }
 
-field_descriptor* field_descriptor::get_transpose()
+template<>
+field_descriptor<float>* field_descriptor<float>::get_transpose()
 {
     int n[this->ndims];
     for (int i=0; i<this->ndims; i++)
         n[i] = this->sizes[this->ndims - i - 1];
-    return new field_descriptor(this->ndims, n, this->mpi_dtype, this->comm);
+    return new field_descriptor<float>(this->ndims, n, this->mpi_dtype, this->comm);
 }
 

src/field_descriptor.hpp

@@ -31,6 +31,8 @@ extern int myrank, nprocs;
 template <class rnumber>
 class field_descriptor
 {
+    private:
+        typedef rnumber cnumber[2];
     public:
 
         /* data */
@@ -76,20 +78,20 @@ class field_descriptor
                 rnumber *input,
                 rnumber *output);
         int transpose(
-                rnumber *input[2],
-                rnumber *output[2] = NULL);
+                cnumber *input,
+                cnumber *output = NULL);
 
         int interleave(
                 rnumber *input,
                 int dim);
         int interleave(
-                rnumber *input[2],
+                cnumber *input,
                 int dim);
 
         int switch_endianness(
                 rnumber *a);
         int switch_endianness(
-                rnumber *a[2]);
+                cnumber *a);
 };
 
 
@@ -98,13 +100,13 @@ class field_descriptor
  * the arrays are assumed to use fftw layout.
  * */
 int fftwf_copy_complex_array(
-        field_descriptor *fi,
+        field_descriptor<float> *fi,
         fftwf_complex *ai,
-        field_descriptor *fo,
+        field_descriptor<float> *fo,
         fftwf_complex *ao);
 
 int fftwf_clip_zero_padding(
-        field_descriptor *f,
+        field_descriptor<float> *f,
         float *a);
 
 inline float btle(const float be)