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* numeric.c (flodivmod): work around for inifinity.

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* numeric.c (flo_divmod): work around for platforms have no round().
  [ruby-dev:32247]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@13907 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2007-11-13 07:33:09 +00:00
parent 6bc16a1198
commit 4e0ac23588
3 changed files with 21 additions and 4 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
Tue Nov 13 16:33:07 2007 Nobuyoshi Nakada <nobu@ruby-lang.org>
* numeric.c (flodivmod): work around for inifinity.
* numeric.c (flo_divmod): work around for platforms have no round().
[ruby-dev:32247]
Tue Nov 13 13:58:51 2007 Tanaka Akira <akr@fsij.org>
* numeric.c (numeric.c): Integer#ord implemented. [ruby-dev:32206]

2
configure.in
View file

@ -545,7 +545,7 @@ AC_CHECK_FUNCS(fmod killpg wait4 waitpid syscall chroot fsync getcwd eaccess\
getgroups setgroups getpriority getrlimit setrlimit sysconf\
group_member dlopen sigprocmask\
sigaction _setjmp setsid telldir seekdir fchmod mktime timegm\
cosh sinh tanh setuid setgid setenv unsetenv)
cosh sinh tanh round setuid setgid setenv unsetenv)
AC_ARG_ENABLE(setreuid,
[ --enable-setreuid use setreuid()/setregid() according to need even if obsolete.],
[use_setreuid=$enableval])

16
numeric.c
View file

@ -663,7 +663,10 @@ flodivmod(x, y, divp, modp)
mod = x - z * y;
}
#endif
div = (x - mod) / y;
if (isinf(x) && !isinf(y) && !isnan(y))
div = x;
else
div = (x - mod) / y;
if (y*mod < 0) {
mod += y;
div -= 1.0;
@ -736,11 +739,18 @@ flo_divmod(x, y)
}
flodivmod(RFLOAT(x)->value, fy, &div, &mod);
if (FIXABLE(div)) {
#ifdef HVAE_ROUND
val = round(div);
a = LONG2FIX(val);
#else
val = (div < 0) ? ceil(x - 0.5) : floor(x + 0.5);
#endif
a = LONG2FIX(val);
}
else if (isnan(div) || isinf(div)) {
a = rb_float_new(div);
}
else {
a = rb_dbl2big(div);
a = rb_dbl2big(div);
}
b = rb_float_new(mod);
return rb_assoc_new(a, b);