diff options
Diffstat (limited to 'lib/libc/stdio/printf.3')
-rw-r--r-- | lib/libc/stdio/printf.3 | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/lib/libc/stdio/printf.3 b/lib/libc/stdio/printf.3 index dd2360f13eca..f2428740b529 100644 --- a/lib/libc/stdio/printf.3 +++ b/lib/libc/stdio/printf.3 @@ -29,10 +29,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" @(#)printf.3 8.1 (Berkeley) 6/4/93 -.\" $FreeBSD$ -.\" -.Dd May 22, 2018 +.Dd September 5, 2023 .Dt PRINTF 3 .Os .Sh NAME @@ -213,6 +210,17 @@ and .Cm u conversions, this option has no effect. For +.Cm b +and +.Cm B +conversions, a non-zero result has the string +.Ql 0b +(or +.Ql 0B +for +.Cm B +conversions) prepended to it. +For .Cm o conversions, the precision of the number is increased to force the first character of the output string to a zero. @@ -246,7 +254,7 @@ For all conversions except .Cm n , the converted value is padded on the left with zeros rather than blanks. If a precision is given with a numeric conversion -.Cm ( d , i , o , u , i , x , +.Cm ( b , B , d , i , o , u , i , x , and .Cm X ) , the @@ -302,7 +310,7 @@ followed by an optional digit string. If the digit string is omitted, the precision is taken as zero. This gives the minimum number of digits to appear for -.Cm d , i , o , u , x , +.Cm b , B , d , i , o , u , x , and .Cm X conversions, the number of digits to appear after the decimal-point for @@ -320,18 +328,20 @@ conversions. .It An optional length modifier, that specifies the size of the argument. The following length modifiers are valid for the -.Cm d , i , n , o , u , x , +.Cm b , B , d , i , n , o , u , x , or .Cm X conversion: .Bl -column ".Cm q Em (deprecated)" ".Vt signed char" ".Vt unsigned long long" ".Vt long long *" -.It Sy Modifier Ta Cm d , i Ta Cm o , u , x , X Ta Cm n +.It Sy Modifier Ta Cm d , i Ta Cm b , B , o , u , x , X Ta Cm n .It Cm hh Ta Vt "signed char" Ta Vt "unsigned char" Ta Vt "signed char *" .It Cm h Ta Vt short Ta Vt "unsigned short" Ta Vt "short *" .It Cm l No (ell) Ta Vt long Ta Vt "unsigned long" Ta Vt "long *" .It Cm ll No (ell ell) Ta Vt "long long" Ta Vt "unsigned long long" Ta Vt "long long *" .It Cm j Ta Vt intmax_t Ta Vt uintmax_t Ta Vt "intmax_t *" .It Cm t Ta Vt ptrdiff_t Ta (see note) Ta Vt "ptrdiff_t *" +.It Cm w Ns Ar N Ta Vt intN_t Ta Vt uintN_t Ta Vt "intN_t *" +.It Cm wf Ns Ar N Ta Vt int_fastN_t Ta Vt uint_fastN_t Ta Vt "int_fastN_t *" .It Cm z Ta (see note) Ta Vt size_t Ta (see note) .It Cm q Em (deprecated) Ta Vt quad_t Ta Vt u_quad_t Ta Vt "quad_t *" .El @@ -340,7 +350,7 @@ Note: the .Cm t modifier, when applied to a -.Cm o , u , x , +.Cm b , B , o , u , x , or .Cm X conversion, indicates that the argument is of an unsigned type @@ -404,11 +414,16 @@ If a single format directive mixes positional and non-positional arguments, the results are undefined. .Pp The conversion specifiers and their meanings are: -.Bl -tag -width ".Cm diouxX" -.It Cm diouxX +.Bl -tag -width ".Cm bBdiouxX" +.It Cm bBdiouxX The .Vt int -(or appropriate variant) argument is converted to signed decimal +(or appropriate variant) argument is converted to +unsigned binary +.Cm ( b +and +.Cm B ) , +signed decimal .Cm ( d and .Cm i ) , |