diff options
| -rw-r--r-- | doc/lispref/numbers.texi | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/doc/lispref/numbers.texi b/doc/lispref/numbers.texi index dd78bce4c90..a8150478613 100644 --- a/doc/lispref/numbers.texi +++ b/doc/lispref/numbers.texi @@ -193,8 +193,14 @@ on 64-bit platforms. @defvar integer-width The value of this variable is a nonnegative integer that is an upper bound on the number of bits in a bignum. Integers outside the fixnum -range are limited to absolute values less than 2@sup{@var{n}}, where -@var{n} is this variable's value. Attempts to create bignums outside +range are limited to absolute values less than +@ifnottex +2**@var{n}, +@end ifnottex +@tex +@math{2^{n}}, +@end tex +where @var{n} is this variable's value. Attempts to create bignums outside this range result in an integer overflow error. Setting this variable to zero disables creation of bignums; setting it to a large number can cause Emacs to consume large quantities of memory if a computation @@ -857,8 +863,14 @@ reproducing the same pattern moved over. to the left @var{count} places, or to the right if @var{count} is negative. Left shifts introduce zero bits on the right; right shifts discard the rightmost bits. Considered as an integer operation, -@code{ash} multiplies @var{integer1} by 2@sup{@var{count}} and then -converts the result to an integer by rounding downward, toward +@code{ash} multiplies @var{integer1} by +@ifnottex +2**@var{count}, +@end ifnottex +@tex +@math{2^{count}}, +@end tex +and then converts the result to an integer by rounding downward, toward minus infinity. Here are examples of @code{ash}, shifting a pattern of bits one place |