diff options
author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-02-09 09:36:03 +0000 |
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committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-02-09 09:36:03 +0000 |
commit | b160d23c68e2e8fcd82b96fab0977be11c2b9ec6 (patch) | |
tree | d85dbe40e1b2ff4089f4c4f228e65e2eb09243b5 /math.c | |
parent | a424741c8e73bbca5d893594abbdfda489794739 (diff) |
* math.c (math_cbrt): new method Math.cbrt.
* configure.in (cbrt): check for replacement functions.
* missing/cbrt.c: new file.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15416 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'math.c')
-rw-r--r-- | math.c | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -402,6 +402,20 @@ math_sqrt(VALUE obj, VALUE x) /* * call-seq: + * Math.cbrt(numeric) => float + * + * Returns the cube root of <i>numeric</i>. + */ + +static VALUE +math_cbrt(VALUE obj, VALUE x) +{ + Need_Float(x); + return DOUBLE2NUM(cbrt(RFLOAT_VALUE(x))); +} + +/* + * call-seq: * Math.frexp(numeric) => [ fraction, exponent ] * * Returns a two-element array containing the normalized fraction (a @@ -611,6 +625,7 @@ Init_Math(void) rb_define_module_function(rb_mMath, "log2", math_log2, 1); rb_define_module_function(rb_mMath, "log10", math_log10, 1); rb_define_module_function(rb_mMath, "sqrt", math_sqrt, 1); + rb_define_module_function(rb_mMath, "cbrt", math_cbrt, 1); rb_define_module_function(rb_mMath, "frexp", math_frexp, 1); rb_define_module_function(rb_mMath, "ldexp", math_ldexp, 2); |