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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/trunk@10626 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
matz 2006-07-27 15:26:14 +00:00
parent 41005d43a8
commit 21f5f47287
2 changed files with 40 additions and 27 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
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 22:21:52 2006 Nobuyoshi Nakada <nobu@ruby-lang.org>
* time.c (time_to_s): fixed format mismatch.

56
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:
@ -40,7 +61,6 @@ math_atan2(VALUE obj, VALUE y, VALUE x)
}
/*
* call-seq:
* Math.cos(x) => float
@ -103,9 +123,7 @@ math_acos(VALUE obj, VALUE 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);
}
@ -124,9 +142,7 @@ math_asin(VALUE obj, VALUE 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);
}
@ -228,9 +244,7 @@ math_acosh(VALUE obj, VALUE 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);
}
@ -263,9 +277,7 @@ math_atanh(VALUE obj, VALUE 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);
}
@ -309,16 +321,11 @@ math_log(int argc, VALUE *argv)
Need_Float(x);
errno = 0;
d = log(RFLOAT(x)->value);
if (errno) {
rb_sys_fail("log");
}
if (!NIL_P(base)) {
Need_Float(base);
d /= log(RFLOAT(base)->value);
}
if (errno) {
rb_sys_fail("log");
}
domain_check(d);
return rb_float_new(d);
}
@ -370,9 +377,7 @@ math_log10(VALUE obj, VALUE 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);
}
@ -380,8 +385,7 @@ math_log10(VALUE obj, VALUE 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
@ -392,9 +396,7 @@ math_sqrt(VALUE obj, VALUE 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);
}