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From: gwyn@brl-vld@sri-unix.UUCP
Newsgroups: net.unix-wizards
Subject: Re:  Bug in 4.1BSD C library "printf" (actually _doprnt)
Message-ID: <3948@sri-arpa.UUCP>
Date: Sun, 7-Aug-83 21:58:44 EDT
Article-I.D.: sri-arpa.3948
Posted: Sun Aug  7 21:58:44 1983
Date-Received: Mon, 8-Aug-83 21:16:16 EDT
Lines: 8

From:      Doug Gwyn (VLD/VMB) <gwyn@brl-vld>

I don't think that's a bug.  "%1.0f" means use a minimum field width
of 1 character with 0 characters after the decimal point and no
decimal point, but as many characters as required left of the decimal
point.  So 10.0 converted this way would give you "10", etc.

Printf's philosophy is to never truncate significant digits.