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Spec for div changed.

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add,sub,mult,div now can specify exact digits number.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4154 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
shigek 2003-07-25 02:27:33 +00:00
parent aafd6b025c
commit 651f324a27
2 changed files with 5 additions and 6 deletions
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1
ext/bigdecimal/lib/bigdecimal/util.rb
View file

@ -63,7 +63,6 @@ end
class Rational < Numeric class Rational < Numeric
# Convert Rational to BigDecimal # Convert Rational to BigDecimal
# to_d returns an array [quotient,residue]
def to_d(nFig=0) def to_d(nFig=0)
num = self.numerator.to_s num = self.numerator.to_s
if nFig<=0 if nFig<=0

10
ext/bigdecimal/sample/pi.rb
View file

@ -20,9 +20,9 @@ def big_pi(sig) # sig: Number of significant figures
k = BigDecimal::new("1") k = BigDecimal::new("1")
w = BigDecimal::new("1") w = BigDecimal::new("1")
t = BigDecimal::new("-80") t = BigDecimal::new("-80")
while (u.exponent >= exp) while (u.nonzero? && u.exponent >= exp)
t = t*m25 t = t*m25
u,r = t.div(k,sig) u = t.div(k,sig)
pi = pi + u pi = pi + u
k = k+two k = k+two
end end
@ -31,9 +31,9 @@ def big_pi(sig) # sig: Number of significant figures
k = BigDecimal::new("1") k = BigDecimal::new("1")
w = BigDecimal::new("1") w = BigDecimal::new("1")
t = BigDecimal::new("956") t = BigDecimal::new("956")
while (u.exponent >= exp ) while (u.nonzero? && u.exponent >= exp )
t,r = t.div(m57121,sig) t = t.div(m57121,sig)
u,r = t.div(k,sig) u = t.div(k,sig)
pi = pi + u pi = pi + u
k = k+two k = k+two
end end