[tz] source code question regarding localtime.c

Alois Treindl alois at astro.ch
Wed Aug 7 13:04:17 UTC 2013


In localtime.c, function localsub() are these three lines of code:

1295    icycles = tcycles;
1296    if (tcycles - icycles >= 1 || icycles - tcycles >=  1)
1297      return NULL;

I do not understand the reason why lines 1296 and 1297 exist.
icycles and tcycles are equal.
Their difference is always zero. Why test for it being not zero?


More information about the tz mailing list