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Diffstat (limited to 'manual/arith.texi')
| -rw-r--r-- | manual/arith.texi | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/manual/arith.texi b/manual/arith.texi index c5795c2ed8..e160438938 100644 --- a/manual/arith.texi +++ b/manual/arith.texi @@ -657,9 +657,7 @@ such as by defining @code{_GNU_SOURCE}, and then you must include @w{IEEE 754} also allows for another unusual value: negative zero. This value is produced when you divide a positive number by negative infinity, or when a negative result is smaller than the limits of -representation. Negative zero behaves identically to zero in all -calculations, unless you explicitly test the sign bit with -@code{signbit} or @code{copysign}. +representation. @node Status bit operations @subsection Examining the FPU status word @@ -926,9 +924,7 @@ If a result is too small to be represented as a denormalized number, it is rounded to zero. However, the sign of the result is preserved; if the calculation was negative, the result is @dfn{negative zero}. Negative zero can also result from some operations on infinity, such as -@math{4/-@infinity{}}. Negative zero behaves identically to zero except -when the @code{copysign} or @code{signbit} functions are used to check -the sign bit directly. +@math{4/-@infinity{}}. At any time one of the above four rounding modes is selected. You can find out which one with this function: |