diff options
| author | Christopher Hall <chall0@gmail.com> | 2013-09-02 15:41:56 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2013-09-04 09:26:28 +0200 |
| commit | abbcef30df66e01e4afc5d676c20ce43d995d017 (patch) | |
| tree | e373901c34603eea62c1f40442144b537165b2c6 | |
| parent | 7d0ec5b670e739f8030b04263325e605e5c935b0 (diff) | |
printf.3: Correctly describe the meaning of a negative precision
The printf(3) manpage says that a negative precision is taken to
be zero, whereas printf(3p) says that a negative precision is
taken as if the precision were omitted. glibc agrees with the
latter (POSIX) specification.
Test code:
printf("%f\n",42.0); // "42.000000"
printf("%.*f\n",0,42.0); // "42"
printf("%.*f\n",-1,42.0); // "42.000000"
This patch corrects the explanation to match what actually happens.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man3/printf.3 | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/man3/printf.3 b/man3/printf.3 index f5e96d3e..61f8e4d5 100644 --- a/man3/printf.3 +++ b/man3/printf.3 @@ -31,7 +31,7 @@ .\" 2000-07-26 jsm28@hermes.cam.ac.uk - three small fixes .\" 2000-10-16 jsm28@hermes.cam.ac.uk - more fixes .\" -.TH PRINTF 3 2013-03-05 "GNU" "Linux Programmer's Manual" +.TH PRINTF 3 2013-09-04 "GNU" "Linux Programmer's Manual" .SH NAME printf, fprintf, sprintf, snprintf, vprintf, vfprintf, vsprintf, vsnprintf \- formatted output conversion @@ -409,8 +409,9 @@ Instead of a decimal digit string one may write "*" or "*m$" is given in the next argument, or in the m-th argument, respectively, which must be of type .IR int . -If the precision is given as just \(aq.\(aq, or the precision is negative, -the precision is taken to be zero. +If the precision is given as just \(aq.\(aq, the precision is taken to +be zero. A negative precision is taken as if the precision were +omitted. This gives the minimum number of digits to appear for .BR d , .BR i , |