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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/trunk@13907 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2007-11-13 07:33:09 +00:00
parent 9829e14432
commit b7d363ead6
3 changed files with 19 additions and 2 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 15:26:33 2007 Tanaka Akira <akr@fsij.org>
* lex.c.blt: moved from lex.c.

2
configure.in
View file

@ -598,7 +598,7 @@ AC_CHECK_FUNCS(fmod killpg wait4 waitpid fork spawnv syscall chroot fsync getcwd
getpgrp setpgrp getpgid setpgid initgroups getgroups setgroups\
getpriority getrlimit setrlimit sysconf group_member\
dlopen sigprocmask sigaction _setjmp vsnprintf snprintf\
setsid telldir seekdir fchmod mktime timegm cosh sinh tanh log2\
setsid telldir seekdir fchmod mktime timegm cosh sinh tanh log2 round\
setuid setgid daemon select_large_fdset setenv unsetenv)
AC_ARG_ENABLE(setreuid,
[ --enable-setreuid use setreuid()/setregid() according to need even if obsolete.],

12
numeric.c
View file

@ -644,7 +644,10 @@ flodivmod(double x, double y, double *divp, double *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;
@ -715,9 +718,16 @@ flo_divmod(VALUE x, VALUE y)
}
flodivmod(RFLOAT(x)->value, fy, &div, &mod);
if (FIXABLE(div)) {
#ifdef HVAE_ROUND
val = round(div);
#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);
}