/*! \brief Allocate and initialize a complex vector
* \param[in] len The buffer length in complex samples
* \param[in] start Starting index for useful data
* \param[in] buf Pointer to a pre-existing buffer
* \param[in] flags Flags for various vector attributes
*
* If buf is NULL, then a buffer will be allocated.
*/
struct cxvec *cxvec_alloc(int len, int start, float complex *buf, int flags)
{
struct cxvec *vec;
/* Disallow zero length data */
if ((start >= len) || (len <= 0) || (start < 0)) {
fprintf(stderr, "cxvec_alloc: invalid input\n");
return NULL;
}
vec = (struct cxvec *) malloc(sizeof(struct cxvec));
if (!buf) {
if (flags & CXVEC_FLG_MEM_ALIGN)
buf = (float complex *) memalign(ALIGN_SZ, sizeof(float complex) * len);
else if (flags & CXVEC_FLG_FFT_ALIGN)
buf = (float complex *) fft_malloc(sizeof(float complex) * len);
else
buf = (float complex *) malloc(sizeof(float complex) * len);
} else {
flags |= CXVEC_FLG_MEM_CHILD;
}
cxvec_init(vec, len - start, len, start, buf, flags);
return vec;
}
void mem_alloc_reserved(Mem* const mem)
{
if(mem->buf) free(mem->buf);
mem->buf= fft_malloc(mem->size_using);
if(mem->buf == 0)
msg_abort("Error: Unable to allocate %lu MB for %s\n",
mem->size_using/(1024*1024), mem->name);
else
msg_printf(msg_info, "%lu MB allocated for mem %s\n",
mem->size_using/(1024*1024), mem->name);
mem->size_alloc= mem->size_using;
mem->size_using= 0;
}