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| author | Richard M. Stallman <rms@gnu.org> | 1998-04-17 23:36:34 +0000 |
|---|---|---|
| committer | Richard M. Stallman <rms@gnu.org> | 1998-04-17 23:36:34 +0000 |
| commit | 3c32996351d062b891c7cfbfe6a7ce5c63bd2fc8 (patch) | |
| tree | 679e8aa0330e13bb96aebc21fac0bfbb12901875 /src/lread.c | |
| parent | 5ae07613263106995d4ec33b59901a2007c23f0f (diff) | |
| download | emacs-3c32996351d062b891c7cfbfe6a7ce5c63bd2fc8.tar.gz | |
(read1): Compute NaN and infinities using 0.0 in a
variable, to cope with compilers that think they are smarter than us.
Diffstat (limited to 'src/lread.c')
| -rw-r--r-- | src/lread.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/lread.c b/src/lread.c index 0d7238ddf35..3df769115f4 100644 --- a/src/lread.c +++ b/src/lread.c @@ -1916,6 +1916,7 @@ read1 (readcharfun, pch, first_in_list) #ifdef LISP_FLOAT_TYPE if (isfloat_string (read_buffer)) { + double zero = 0.0; double value = atof (read_buffer); if (read_buffer[0] == '-' && value == 0.0) value *= -1.0; @@ -1924,11 +1925,11 @@ read1 (readcharfun, pch, first_in_list) if (p[-1] == 'F' || p[-1] == 'N') { if (p[-1] == 'N') - value = 0.0 / 0.0; + value = zero / zero; else if (read_buffer[0] == '-') - value = -1.0e999; + value = - 1.0 / zero; else - value = 1.0e999; + value = 1.0 / zero; } return make_float (value); } |