add functions that allow the user to convert rlx_spectras to flat arrays

relaxisloader.c

@@ -323,6 +323,54 @@ int* rlx_get_spectra_ids(struct rlxfile* file, const struct rlx_project* project
 	return ids;
 }
 
+int rlx_get_float_arrays(const struct rlx_spectra *spectra, float **re, float **im, float **omega)
+{
+	*re = malloc(sizeof(float)*spectra->length);
+	if(!*re)
+		return -103;
+
+	*im = malloc(sizeof(float)*spectra->length);
+	if(!*im)
+		return -103;
+
+	*omega = malloc(sizeof(float)*spectra->length);
+	if(!*omega)
+		return -103;
+
+	for(size_t i = 0; i <spectra->length; ++i)
+	{
+		(*re)[i] = spectra->datapoints[i].re;
+		(*im)[i] = spectra->datapoints[i].im;
+		(*omega)[i] = spectra->datapoints[i].omega;
+	}
+
+	return 0;
+}
+
+int rlx_get_double_arrays(const struct rlx_spectra *spectra, double **re, double **im, double **omega)
+{
+	*re = malloc(sizeof(double)*spectra->length);
+	if(!*re)
+		return -103;
+
+	*im = malloc(sizeof(double)*spectra->length);
+	if(!*im)
+		return -103;
+
+	*omega = malloc(sizeof(double)*spectra->length);
+	if(!*omega)
+		return -103;
+
+	for(size_t i = 0; i <spectra->length; ++i)
+	{
+		(*re)[i] = spectra->datapoints[i].re;
+		(*im)[i] = spectra->datapoints[i].im;
+		(*omega)[i] = spectra->datapoints[i].omega;
+	}
+
+	return 0;
+}
+
 struct rlx_fitparam** rlx_get_fit_parameters(struct rlxfile* file, const struct rlx_project* project, int id, size_t *length)
 {
 	(void)project;
@@ -394,6 +442,8 @@ const char* rlx_get_errnum_str(int errnum)
 		return "Project contains no spectra";
 	if(errnum == -102)
 		return "Tried to load non existing spectra";
+	if(errnum == -103)
+		return "Out of memory";
 	return "Unkown error";
 }
 

relaxisloader/relaxisloader.h

@@ -190,6 +190,32 @@ int* rlx_get_spectra_ids(struct rlxfile* file, const struct rlx_project* project
  */
 struct rlx_spectra* rlx_get_spectra(struct rlxfile* file, const struct rlx_project* project, int id);
 
+/**
+ * @brief transforms a rlx_spectra struct into a set of newly allocated arrays, float version.
+ *
+ * If this function encounters an error it will return NULL and set an error at rlx_get_errnum.
+ *
+ * @param spectra the spectra to convert
+ * @param re an array with the real part of the spectra will be allocated here. To be freed by free().
+ * @param im an array with the imaginary part of the spectra will be allocated here. To be freed by free().
+ * @param omega an array with the omega values of the spectra will be allocated here. To be freed by free().
+ * @return 0 if successful or an error number < 0 interpertable by rlx_get_errnum_str otherwise, no allocations will be performed on error.
+ */
+int rlx_get_float_arrays(const struct rlx_spectra *spectra, float **re, float **im, float **omega);
+
+/**
+ * @brief transforms a rlx_spectra struct into a set of newly allocated arrays, double version.
+ *
+ * If this function encounters an error it will return NULL and set an error at rlx_get_errnum.
+ *
+ * @param spectra the spectra to convert
+ * @param re an array with the real part of the spectra will be allocated here. To be freed by free().
+ * @param im an array with the imaginary part of the spectra will be allocated here. To be freed by free().
+ * @param omega an array with the omega values of the spectra will be allocated here. To be freed by free().
+ * @return 0 if successful or an error number < 0 interpertable by rlx_get_errnum_str otherwise, no allocations will be performed on error.
+ */
+int rlx_get_double_arrays(const struct rlx_spectra *spectra, double **re, double **im, double **omega);
+
 /**
  * @brief Loads the parameters for a given spectra id from file
  *