View difference between Paste ID: nngQaSTB and aLw6Jmtn

 // Copy negative frequency components to end of buffer and zero out middle
 //  inp    - input buffer of complex floats
 //    n    - transform size
 //  interp - interpolation amount
 void zero_pad_freq(cfloat_t *inp, size_t n, size_t interp) {
-    memmove(inp + n*interp - n/2, inp + (n+1)/2, (n+1)/2*sizeof(cfloat_t));
+    if ((n % 2) == 0) {
-    memset (inp + n/2 + 1, 0,           (n*(interp-1)-1)*sizeof(cfloat_t));
+        memmove(inp + n*interp - n/2, inp + n/2,     n/2*sizeof(cfloat_t));
-
+        memset (inp + n/2 + 1, 0,       (n*(interp-1)-1)*sizeof(cfloat_t)); // Duplicate Fs/2 so we need one less zero
-    if (n % 2 == 0) {
+
         inp[n/2]          /= 2.0;
-        inp[n*interp-n/2]  = conj(inp[n/2])/2.0;
+        inp[n*interp-n/2] /= 2.0;
     } else {
         memmove(inp + n*interp - n/2, inp + (n+1)/2, n/2*sizeof(cfloat_t));
         memset (inp + (n+1)/2, 0,         (n*(interp-1))*sizeof(cfloat_t));
     }
 }