Page Menu
Home
FreeBSD
Search
Configure Global Search
Log In
Files
F145588857
D25462.diff
No One
Temporary
Actions
View File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Flag For Later
Award Token
Size
2 KB
Referenced Files
None
Subscribers
None
D25462.diff
View Options
Index: head/usr.bin/printf/printf.1
===================================================================
--- head/usr.bin/printf/printf.1
+++ head/usr.bin/printf/printf.1
@@ -31,7 +31,7 @@
.\" @(#)printf.1 8.1 (Berkeley) 6/6/93
.\" $FreeBSD$
.\"
-.Dd July 29, 2019
+.Dd July 1, 2020
.Dt PRINTF 1
.Os
.Sh NAME
@@ -316,12 +316,48 @@
manual page.
.Sh EXIT STATUS
.Ex -std
+.Sh EXAMPLES
+Print the string
+.Qq hello :
+.Bd -literal -offset indent
+$ printf "%s\en" hello
+hello
+.Ed
+.Pp
+Same as above, but notice that the format string is not quoted and hence we
+do not get the expected behavior:
+.Bd -literal -offset indent
+$ printf %s\en hello
+hellon$
+.Ed
+.Pp
+Print arguments forcing sign only for the first argument:
+.Bd -literal -offset indent
+$ printf "%+d\en%d\en%d\en" 1 -2 13
++1
+-2
+13
+.Ed
+.Pp
+Same as above, but the single format string will be applied to the three
+arguments:
+.Bd -literal -offset indent
+$ printf "%+d\en" 1 -2 13
++1
+-2
++13
+.Ed
+.Pp
+Print number using only two digits after the decimal point:
+.Bd -literal -offset indent
+$ printf "%.2f\en" 31.7456
+31.75
+.Ed
.Sh COMPATIBILITY
The traditional
.Bx
behavior of converting arguments of numeric formats not beginning
-with a digit to the
-.Tn ASCII
+with a digit to the ASCII
code of the first character is not supported.
.Sh SEE ALSO
.Xr builtin 1 ,
@@ -343,8 +379,7 @@
after the standard library function,
.Xr printf 3 .
.Sh CAVEATS
-.Tn ANSI
-hexadecimal character constants were deliberately not provided.
+ANSI hexadecimal character constants were deliberately not provided.
.Pp
Trying to print a dash ("-") as the first character causes
.Nm
@@ -364,10 +399,8 @@
formats with a precision
may not operate as expected.
.Sh BUGS
-Since the floating point numbers are translated from
-.Tn ASCII
-to floating-point and
-then back again, floating-point precision may be lost.
+Since the floating point numbers are translated from ASCII
+to floating-point and then back again, floating-point precision may be lost.
(By default, the number is translated to an IEEE-754 double-precision
value before being printed.
The
File Metadata
Details
Attached
Mime Type
text/plain
Expires
Sun, Feb 22, 9:23 PM (6 h, 38 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
28943900
Default Alt Text
D25462.diff (2 KB)
Attached To
Mode
D25462: printf(1): Add EXAMPLES section
Attached
Detach File
Event Timeline
Log In to Comment