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| author | Paul Eggert <eggert@cs.ucla.edu> | 2018-08-01 00:49:39 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2018-08-01 00:51:55 -0700 |
| commit | 6e37d2fd05bea373c472af1c6e80238ace5e1c94 (patch) | |
| tree | 9c3090ba9e3bdb682b7702d64db98581befe1009 /doc/lispref/numbers.texi | |
| parent | e28a37438d4ba71cd8a053e956686ab29ff97b6a (diff) | |
| download | emacs-6e37d2fd05bea373c472af1c6e80238ace5e1c94.tar.gz | |
Read and print NaN significand if <ieee754.h>
* configure.ac: Check for ieee754.h.
* doc/lispref/numbers.texi (Float Basics): Document
that NaN string representation digits are machine-dependent.
* etc/NEWS: Mention the change.
* src/lread.c, src/print.c [HAVE_IEEE754_H]: Include ieee754.h.
* src/lread.c (string_to_number) [HAVE_IEEE754_H]:
* src/print.c (float_to_string) [HAVE_IEEE754_H]:
Read and print NaN significand.
Diffstat (limited to 'doc/lispref/numbers.texi')
| -rw-r--r-- | doc/lispref/numbers.texi | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/lispref/numbers.texi b/doc/lispref/numbers.texi index 14d5059ffb3..a3317c9a260 100644 --- a/doc/lispref/numbers.texi +++ b/doc/lispref/numbers.texi @@ -241,7 +241,7 @@ A NaN is never numerically equal to any value, not even to itself. NaNs carry a sign and a significand, and non-numeric functions treat two NaNs as equal when their signs and significands agree. Significands of NaNs are -machine-dependent and are not directly visible to Emacs Lisp. +machine-dependent, as are the digits in their string representation. When NaNs and signed zeros are involved, non-numeric functions like @code{eql}, @code{equal}, @code{sxhash-eql}, @code{sxhash-equal} and |