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24068: attempt to make `printf "%g\n" -0 output "-0"

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This commit is contained in:
Peter Stephenson 2007-11-06 11:04:34 +00:00
parent 154ebe3e96
commit b9f3fc7c81
2 changed files with 25 additions and 3 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2007-11-06 Peter Stephenson <pws@csr.com>
* 24068: Src/builtin.c: attempt to make `printf "%g\n" -0'
output "-0", although this depends on the vagaries of the
library's strtod() (works on Solaris, doesn't on Fedora 7).
2007-11-04 Wayne Davison <wayned@users.sourceforge.net>
* unposted: Completion/Unix/Command/_rsync: Added new options

22
Src/builtin.c
View file

@ -4162,9 +4162,25 @@ bin_print(char *name, char **args, Options ops, int func)
break;
case 2:
if (curarg) {
mnumval = matheval(curarg);
doubleval = (mnumval.type & MN_FLOAT) ?
mnumval.u.d : (double)mnumval.u.l;
char *eptr;
/*
* First attempt to parse as a floating
* point constant. If we go through
* a math evaluation, we can lose
* mostly unimportant information
* that people in standards organizations
* worry about.
*/
doubleval = strtod(curarg, &eptr);
/*
* If it didn't parse as a constant,
* parse it as an expression.
*/
if (*eptr != '\0') {
mnumval = matheval(curarg);
doubleval = (mnumval.type & MN_FLOAT) ?
mnumval.u.d : (double)mnumval.u.l;
}
} else doubleval = 0;
if (errflag) {
doubleval = 0;