diff options
Diffstat (limited to 'src/conv.c')
| -rw-r--r-- | src/conv.c | 9 |
1 files changed, 6 insertions, 3 deletions
@@ -310,9 +310,12 @@ osmo_conv_decode_scan(struct osmo_conv_decoder *decoder, m = 1 << (code->N - 1); /* mask for 'out' bit selection */ for (j=0; j<code->N; j++) { - ov = (out & m) ? -127 : 127; /* sbit_t value for it */ - e = ((int)in_sym[j]) - ov; /* raw error for this bit */ - nae += (e * e) >> 9; /* acc the squared/scaled value */ + int is = (int)in_sym[j]; + if (is) { + ov = (out & m) ? -127 : 127; /* sbit_t value for it */ + e = is - ov; /* raw error for this bit */ + nae += (e * e) >> 9; /* acc the squared/scaled value */ + } m >>= 1; /* next mask bit */ } |