I'm wondering "how much time can a 32-bit floating point represent anyway?"

#1

I’m wanting to find out how much time can a 32-bit floating-point number represent? I mean something like this snippet from ai_cmd.c:
if (BotFindMatch(timestring, &timematch, MTCONTEXT_TIME)) { if (timematch.type == MSG_FOREVER) { t = 99999999.0f; }