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printf(9): clarify the description of %b

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The bit values are numbers given in octal representation, not decimal,
as one might assume from the description. Same goes for the base,
although this has an example.

Reviewed by:	emaste
MFC after:	3 days
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D39815
This commit is contained in:
Mitchell Horne 2023-04-25 17:26:36 -03:00
parent 7edb7adf8c
commit 82bc33d5ad
1 changed files with 6 additions and 4 deletions
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10
share/man/man9/printf.9
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@ -26,7 +26,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd April 14, 2023
.Dd April 25, 2023
.Dt PRINTF 9
.Os
.Sh NAME
@ -94,11 +94,13 @@ and a
These are used as a register value and a print mask for decoding bitmasks.
The print mask is made up of two parts: the base and the
arguments.
The base value is the output base expressed as an integer value;
The base value is the output base (radix) expressed as an octal value;
for example, \e10 gives octal and \e20 gives hexadecimal.
The arguments are made up of a sequence of bit identifiers.
Each bit identifier begins with an integer value which is the number of the
bit (starting from 1) this identifier describes.
Each bit identifier begins with an
.Em octal
value which is the number of the bit (starting from 1) this identifier
describes.
The rest of the identifier is a string of characters containing the name of
the bit.
The string is terminated by either the bit number at the start of the next