diff options
| -rw-r--r-- | math.c | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -308,6 +308,11 @@ math_atanh(VALUE obj, VALUE x) * Math.exp(x) => float * * Returns e**x. + * + * Math.exp(0) #=> 1.0 + * Math.exp(1) #=> 2.718281828459045 + * Math.exp(1.5) #=> 4.4816890703380645 + * */ static VALUE @@ -334,6 +339,12 @@ math_exp(VALUE obj, VALUE x) * Returns the natural logarithm of <i>numeric</i>. * If additional second argument is given, it will be the base * of logarithm. + * + * Math.log(1) #=> 0.0 + * Math.log(Math::E) #=> 1.0 + * Math.log(Math::E**3) #=> 3.0 + * Math.log(12,3) #=> 2.2618595071429146 + * */ static VALUE @@ -373,6 +384,12 @@ extern double log2(double); * Math.log2(numeric) => float * * Returns the base 2 logarithm of <i>numeric</i>. + * + * Math.log2(1) #=> 0.0 + * Math.log2(2) #=> 1.0 + * Math.log2(32768) #=> 15.0 + * Math.log2(65536) #=> 16.0 + * */ static VALUE @@ -394,6 +411,11 @@ math_log2(VALUE obj, VALUE x) * Math.log10(numeric) => float * * Returns the base 10 logarithm of <i>numeric</i>. + * + * Math.log10(1) #=> 0.0 + * Math.log10(10) #=> 1.0 + * Math.log10(10**100) #=> 100.0 + * */ static VALUE |