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srsLTE
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Correct a possible sign overflow

This commit is contained in:
Ismael Gomez 2018-02-13 18:17:15 +01:00
parent 70dfa3b2a9
commit 4117119510
1 changed files with 4 additions and 2 deletions
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6
lib/src/phy/phch/prach.c
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@ -282,9 +282,11 @@ int srslte_prach_gen_seqs(srslte_prach_t *p) {
N_shift = (p->N_zc - 2 * d_u) / p->N_cs;
d_start = p->N_zc - 2 * d_u + N_shift * p->N_cs;
N_group = d_u / d_start;
N_neg_shift = (d_u - N_group * d_start) / p->N_cs;
if (N_neg_shift < 0)
if (d_u > N_group * d_start) {
N_neg_shift = (d_u - N_group * d_start) / p->N_cs;
} else {
N_neg_shift = 0;
}
if (N_neg_shift > N_shift)
N_neg_shift = N_shift;
} else {