diff options
Diffstat (limited to 'ext/bigdecimal/bigdecimal.c')
| -rw-r--r-- | ext/bigdecimal/bigdecimal.c | 73 |
1 files changed, 54 insertions, 19 deletions
diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c index 9632a66275..301cd71bc0 100644 --- a/ext/bigdecimal/bigdecimal.c +++ b/ext/bigdecimal/bigdecimal.c @@ -231,6 +231,7 @@ static inline VALUE BigDecimal_div2(VALUE, VALUE, VALUE); static Real* GetVpValueWithPrec(VALUE v, long prec, int must) { + ENTER(1); Real *pv; VALUE num, bg; char szD[128]; @@ -295,6 +296,7 @@ again: case T_BIGNUM: bg = rb_big2str(v, 10); + PUSH(bg); return VpCreateRbObject(strlen(RSTRING_PTR(bg)) + VpBaseFig() + 1, RSTRING_PTR(bg)); default: @@ -1318,25 +1320,14 @@ BigDecimal_divide(Real **c, Real **res, Real **div, VALUE self, VALUE r) return Qnil; } - /* call-seq: - * div(value, digits) - * quo(value) - * - * Divide by the specified value. - * - * e.g. - * c = a.div(b,n) - * - * digits:: If specified and less than the number of significant digits of the - * result, the result is rounded to that number of digits, according - * to BigDecimal.mode. - * - * If digits is 0, the result is the same as the / operator. If not, the - * result is an integer BigDecimal, by analogy with Float#div. - * - * The alias quo is provided since <code>div(value, 0)</code> is the same as - * computing the quotient; see BigDecimal#divmod. - */ +/* call-seq: + * a / b -> bigdecimal + * quo(value) -> bigdecimal + * + * Divide by the specified value. + * + * See BigDecimal#div. + */ static VALUE BigDecimal_div(VALUE self, VALUE r) /* For c = self/r: with round operation */ @@ -1602,6 +1593,37 @@ BigDecimal_div2(VALUE self, VALUE b, VALUE n) } } + /* + * Document-method: BigDecimal#div + * + * call-seq: + * div(value, digits) -> bigdecimal or integer + * + * Divide by the specified value. + * + * digits:: If specified and less than the number of significant digits of the + * result, the result is rounded to that number of digits, according + * to BigDecimal.mode. + * + * If digits is 0, the result is the same as for the / operator + * or #quo. + * + * If digits is not specified, the result is an integer, + * by analogy with Float#div; see also BigDecimal#divmod. + * + * Examples: + * + * a = BigDecimal("4") + * b = BigDecimal("3") + * + * a.div(b, 3) # => 0.133e1 + * + * a.div(b, 0) # => 0.1333333333333333333e1 + * a / b # => 0.1333333333333333333e1 + * a.quo(b) # => 0.1333333333333333333e1 + * + * a.div(b) # => 1 + */ static VALUE BigDecimal_div3(int argc, VALUE *argv, VALUE self) { @@ -3193,6 +3215,19 @@ get_vp_value: * Note also that in mathematics, there is no particular concept of negative * or positive zero; true mathematical zero has no sign. * + * == bigdecimal/util + * + * When you require +bigdecimal/util+, the #to_d method will be + * available on BigDecimal and the native Integer, Float, Rational, + * and String classes: + * + * require 'bigdecimal/util' + * + * 42.to_d # => 0.42e2 + * 0.5.to_d # => 0.5e0 + * (2/3r).to_d(3) # => 0.667e0 + * "0.5".to_d # => 0.5e0 + * * == License * * Copyright (C) 2002 by Shigeo Kobayashi <shigeo@tinyforest.gr.jp>. |