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Diffstat (limited to 'manual/arith.texi')
| -rw-r--r-- | manual/arith.texi | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/manual/arith.texi b/manual/arith.texi index 034d9d2..d500dcf 100644 --- a/manual/arith.texi +++ b/manual/arith.texi @@ -1233,25 +1233,33 @@ whose imaginary part is @var{y}, the absolute value is @w{@code{sqrt @pindex math.h @pindex stdlib.h -Prototypes for @code{abs}, @code{labs} and @code{llabs} are in @file{stdlib.h}; -@code{imaxabs} is declared in @file{inttypes.h}; +Prototypes for @code{abs}, @code{labs}, @code{llabs}, +@code{uabs}, @code{ulabs} and @code{ullabs} are in @file{stdlib.h}; +@code{imaxabs} and @code{uimaxabs} are declared in @file{inttypes.h}; the @code{fabs} functions are declared in @file{math.h}; the @code{cabs} functions are declared in @file{complex.h}. @deftypefun int abs (int @var{number}) @deftypefunx {long int} labs (long int @var{number}) @deftypefunx {long long int} llabs (long long int @var{number}) +@deftypefunx {unsigned int} uabs (int @var{number}) +@deftypefunx {unsigned long int} ulabs (long int @var{number}) +@deftypefunx {unsigned long long int} ullabs (long long int @var{number}) @deftypefunx intmax_t imaxabs (intmax_t @var{number}) +@deftypefunx uintmax_t uimaxabs (intmax_t @var{number}) @standards{ISO, stdlib.h} @standardsx{imaxabs, ISO, inttypes.h} +@standardsx{uimaxabs, ISO, inttypes.h} @safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} These functions return the absolute value of @var{number}. Most computers use a two's complement integer representation, in which the absolute value of @code{INT_MIN} (the smallest possible @code{int}) cannot be represented; thus, @w{@code{abs (INT_MIN)}} is not defined. +Using @code{uabs} avoids this. @code{llabs} and @code{imaxdiv} are new to @w{ISO C99}. +@code{uabs}, @code{ulabs}, @code{ullabs} and @code{uimaxabs} are new to @w{ISO C2Y}. See @ref{Integers} for a description of the @code{intmax_t} type. |