[hackers] [libzahl] zsets: minor optimisation || Mattias Andrée

[git]

commit d2998cadfbdf13a427966a44a17767c316d6d410
Author:     Mattias Andrée <maand...@kth.se>
AuthorDate: Thu Mar 3 21:17:20 2016 +0100
Commit:     Mattias Andrée <maand...@kth.se>
CommitDate: Thu Mar 3 21:17:20 2016 +0100

    zsets: minor optimisation
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

diff --git a/src/zsets.c b/src/zsets.c
index 12669b9..4c97dcb 100644
--- a/src/zsets.c
+++ b/src/zsets.c
@@ -27,13 +27,16 @@ zsets(z_t a, const char *str)
        SET_SIGNUM(a, 0);
 
        switch ((str_end - str) % 19) {
+       case 0:
                while (*str) {
 #define X(n)\
                        temp *= 10, temp += *str++ & 15;\
                case n:
                X(18) X(17) X(16) X(15) X(14) X(13) X(12) X(11) X(10)
-               X(9) X(8) X(7) X(6) X(5) X(4) X(3) X(2) X(1) X(0)
+               X(9) X(8) X(7) X(6) X(5) X(4) X(3) X(2) X(1)
 #undef X
+                       temp *= 10, temp += *str++ & 15;
+
                        zmul(a, a, libzahl_const_1e19);
                        zsetu(libzahl_tmp_str_num, temp);
                        zadd(a, a, libzahl_tmp_str_num);