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* math.c (domain_check): a new function to check domain error

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explicitly for systems that return NaN like FreeBSD.
  [ruby-core:07019]

* math.c (math_acos, math_asin, math_acosh, math_atanh, math_log,
  math_log10, math_sqrt): use domain_check().

* math.c (math_sqrt): fix documentation flaw.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10629 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
matz 2006-07-27 16:14:03 +00:00
parent b5e187c5f7
commit bb6a09ebe2
2 changed files with 40 additions and 24 deletions
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11
ChangeLog
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@ -2,6 +2,17 @@ Thu Jul 27 22:21:52 2006 Nobuyoshi Nakada <nobu@ruby-lang.org>
* time.c (time_to_s): fixed format mismatch.
Thu Jul 27 21:19:54 2006 Yukihiro Matsumoto <matz@ruby-lang.org>
* math.c (domain_check): a new function to check domain error
explicitly for systems that return NaN like FreeBSD.
[ruby-core:07019]
* math.c (math_acos, math_asin, math_acosh, math_atanh, math_log,
math_log10, math_sqrt): use domain_check().
* math.c (math_sqrt): fix documentation flaw.
Thu Jul 27 18:12:12 2006 WATANABE Hirofumi <eban@ruby-lang.org>
* time.c: need to declare time_utc_offset.

53
math.c
View file

@ -22,6 +22,27 @@ VALUE rb_mMath;
Need_Float(y);\
} while (0)
static void
domain_check(x, msg)
double x;
char *msg;
{
while(1) {
if (errno) {
rb_sys_fail(msg);
}
if (isnan(x)) {
#if defined(EDOM)
errno = EDOM;
#elif define(ERANGE)
errno = ERANGE;
#endif
continue;
}
break;
}
}
/*
* call-seq:
@ -41,7 +62,6 @@ math_atan2(obj, y, x)
}
/*
* call-seq:
* Math.cos(x) => float
@ -108,9 +128,7 @@ math_acos(obj, x)
Need_Float(x);
errno = 0;
d = acos(RFLOAT(x)->value);
if (errno) {
rb_sys_fail("acos");
}
domain_check(d, "acos");
return rb_float_new(d);
}
@ -130,9 +148,7 @@ math_asin(obj, x)
Need_Float(x);
errno = 0;
d = asin(RFLOAT(x)->value);
if (errno) {
rb_sys_fail("asin");
}
domain_check(d, "asin");
return rb_float_new(d);
}
@ -242,9 +258,7 @@ math_acosh(obj, x)
Need_Float(x);
errno = 0;
d = acosh(RFLOAT(x)->value);
if (errno) {
rb_sys_fail("acosh");
}
domain_check(d, "acosh");
return rb_float_new(d);
}
@ -279,9 +293,7 @@ math_atanh(obj, x)
Need_Float(x);
errno = 0;
d = atanh(RFLOAT(x)->value);
if (errno) {
rb_sys_fail("atanh");
}
domain_check(d, "atanh");
return rb_float_new(d);
}
@ -325,9 +337,7 @@ math_log(obj, x)
Need_Float(x);
errno = 0;
d = log(RFLOAT(x)->value);
if (errno) {
rb_sys_fail("log");
}
domain_check(d, "log");
return rb_float_new(d);
}
@ -347,9 +357,7 @@ math_log10(obj, x)
Need_Float(x);
errno = 0;
d = log10(RFLOAT(x)->value);
if (errno) {
rb_sys_fail("log10");
}
domain_check(d, "log10");
return rb_float_new(d);
}
@ -357,8 +365,7 @@ math_log10(obj, x)
* call-seq:
* Math.sqrt(numeric) => float
*
* Returns the non-negative square root of <i>numeric</i>. Raises
* <code>ArgError</code> if <i>numeric</i> is less than zero.
* Returns the non-negative square root of <i>numeric</i>.
*/
static VALUE
@ -370,9 +377,7 @@ math_sqrt(obj, x)
Need_Float(x);
errno = 0;
d = sqrt(RFLOAT(x)->value);
if (errno) {
rb_sys_fail("sqrt");
}
domain_check(d, "sqrt");
return rb_float_new(d);
}