search for: read_my_data

Displaying 1 result from an estimated 1 matches for "read_my_data".

2013 Dec 16
1
External pointers and changing SEXPTYPE
...al pointer to a structure holding several types of data, including SEXPs, I discovered that SEXPs change their types between returning from initialization function and another one that uses the pointer. sample R code: # initializing a <- init_my_ptr(fname) # reading more data: error! df <- read_my_data(a) data structure in C: typedef struct { SEXP ans, ans_nms, R_z, R_a, R_b, R_c; FTYPE *datafile; char *fname; float *a, *b, *c; int f_type; float t, p, l; int st, na, result, bFlags; XXX z; } my_data_ptr; // In a C function initializing the external pointer: my_data_ptr *mydata =...