diff options
| author | Martynas Venckus <martynas@cvs.openbsd.org> | 2008-09-15 19:22:33 +0000 |
|---|---|---|
| committer | Martynas Venckus <martynas@cvs.openbsd.org> | 2008-09-15 19:22:33 +0000 |
| commit | d7ba03708b5290acbf53870184fb17818a3c3ca0 (patch) | |
| tree | c7f84a987470fb166aee52b536c5f4c2b0d9d2ae /lib | |
| parent | 4a34109ae54ac520cc98628b80480f2e30b134c0 (diff) | |
- describe how printf(1) and printf(3) %e, %E, %g, %G, %a, %A behave
when the argument is infinity/not-a-number
ok millert@, jmc@
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/stdio/printf.3 | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/lib/libc/stdio/printf.3 b/lib/libc/stdio/printf.3 index 240d06027ec..91e10c45456 100644 --- a/lib/libc/stdio/printf.3 +++ b/lib/libc/stdio/printf.3 @@ -1,4 +1,4 @@ -.\" $OpenBSD: printf.3,v 1.56 2008/09/14 11:44:54 martynas Exp $ +.\" $OpenBSD: printf.3,v 1.57 2008/09/15 19:22:32 martynas Exp $ .\" .\" Copyright (c) 1990, 1991, 1993 .\" The Regents of the University of California. All rights reserved. @@ -33,7 +33,7 @@ .\" .\" @(#)printf.3 8.1 (Berkeley) 6/4/93 .\" -.Dd $Mdocdate: September 14 2008 $ +.Dd $Mdocdate: September 15 2008 $ .Dt PRINTF 3 .Os .Sh NAME @@ -465,6 +465,18 @@ conversion uses the letter to introduce the exponent. The exponent always contains at least two digits; if the value is zero, the exponent is 00. +.Pp +If the argument is infinity, it will be converted to [-]inf +.Pq Cm e +or [-]INF +.Pq Cm E , +respectively. +If the argument is not-a-number (NaN), it will be converted to +[-]nan +.Pq Cm e +or [-]NAN +.Pq Cm E , +respectively. .It Cm fF The .Li double @@ -510,6 +522,18 @@ is used if the exponent from its conversion is less than -4 or greater than or equal to the precision. Trailing zeros are removed from the fractional part of the result; a decimal point appears only if it is followed by at least one digit. +.Pp +If the argument is infinity, it will be converted to [-]inf +.Pq Cm g +or [-]INF +.Pq Cm G , +respectively. +If the argument is not-a-number (NaN), it will be converted to +[-]nan +.Pq Cm g +or [-]NAN +.Pq Cm G , +respectively. .It Cm aA The .Li double @@ -558,6 +582,18 @@ Zeroes are always represented with a mantissa of 0 (preceded by a .Ql - if appropriate) and an exponent of .Li +0 . +.Pp +If the argument is infinity, it will be converted to [-]inf +.Pq Cm a +or [-]INF +.Pq Cm A , +respectively. +If the argument is not-a-number (NaN), it will be converted to +[-]nan +.Pq Cm a +or [-]NAN +.Pq Cm A , +respectively. .It Cm c The .Li int |