diff options
| author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-09-07 12:34:09 +0000 |
|---|---|---|
| committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-09-07 12:34:09 +0000 |
| commit | 0e02d92371b3c3f1474195f1bfe7233b790be040 (patch) | |
| tree | 1b7794db86852bc673256c1d0f107034fec9a09c /math.c | |
| parent | 08e3cb6959f8f554dc86f0decddf0b54193a1a55 (diff) | |
* math.c (math_log): Test the sign for bignums.
(math_log2): Ditto.
(math_log10): Ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42871 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'math.c')
| -rw-r--r-- | math.c | 6 |
1 files changed, 3 insertions, 3 deletions
@@ -444,7 +444,7 @@ math_log(int argc, VALUE *argv) rb_scan_args(argc, argv, "11", &x, &base); - if (TYPE(x) == T_BIGNUM && + if (TYPE(x) == T_BIGNUM && RBIGNUM_POSITIVE_P(x) && DBL_MAX_EXP <= (numbits = rb_absint_numwords(x, 1, NULL))) { numbits -= DBL_MANT_DIG; x = rb_big_rshift(x, SIZET2NUM(numbits)); @@ -501,7 +501,7 @@ math_log2(VALUE obj, VALUE x) double d0, d; size_t numbits = 0; - if (TYPE(x) == T_BIGNUM && + if (TYPE(x) == T_BIGNUM && RBIGNUM_POSITIVE_P(x) && DBL_MAX_EXP <= (numbits = rb_absint_numwords(x, 1, NULL))) { numbits -= DBL_MANT_DIG; x = rb_big_rshift(x, SIZET2NUM(numbits)); @@ -540,7 +540,7 @@ math_log10(VALUE obj, VALUE x) double d0, d; size_t numbits = 0; - if (TYPE(x) == T_BIGNUM && + if (TYPE(x) == T_BIGNUM && RBIGNUM_POSITIVE_P(x) && DBL_MAX_EXP <= (numbits = rb_absint_numwords(x, 1, NULL))) { numbits -= DBL_MANT_DIG; x = rb_big_rshift(x, SIZET2NUM(numbits)); |