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Diffstat (limited to 'doc/gawk.texi')
| -rw-r--r-- | doc/gawk.texi | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/doc/gawk.texi b/doc/gawk.texi index 78a21b85..2a0653f8 100644 --- a/doc/gawk.texi +++ b/doc/gawk.texi @@ -31852,14 +31852,14 @@ rounding modes is shown in @ref{table-gawk-rounding-modes}. @item Round toward positive infinity @tab @code{roundTowardPositive} @tab @code{"U"} or @code{"u"} @item Round toward negative infinity @tab @code{roundTowardNegative} @tab @code{"D"} or @code{"d"} @item Round toward zero @tab @code{roundTowardZero} @tab @code{"Z"} or @code{"z"} -@item Round to nearest, ties away from zero @tab @code{roundTiesToAway} @tab @code{"A"} or @code{"a"} +@item Round away from zero @tab @tab @code{"A"} or @code{"a"} @end multitable @end float @code{ROUNDMODE} has the default value @code{"N"}, which selects the IEEE 754 rounding mode @code{roundTiesToEven}. In @ref{table-gawk-rounding-modes}, the value @code{"A"} selects -@code{roundTiesToAway}. This is only available if your version of the +rounding away from zero. This is only available if your version of the MPFR library supports it; otherwise, setting @code{ROUNDMODE} to @code{"A"} has no effect. @@ -31916,9 +31916,9 @@ The other rounding modes are rarely used. Rounding toward positive infinity (@code{roundTowardNegative}) are often used to implement interval arithmetic, where you adjust the rounding mode to calculate upper and lower bounds for the range of output. The @code{roundTowardZero} mode can -be used for converting floating-point numbers to integers. The rounding -mode @code{roundTiesToAway} rounds the result to the nearest number and -selects the number with the larger magnitude if a tie occurs. +be used for converting floating-point numbers to integers. When rounding +away from zero, the nearest number with magnitude greater than or equal to +the value is selected. Some numerical analysts will tell you that your choice of rounding style has tremendous impact on the final outcome, and advise you to |