| commit | 54c0646bb1d4571d7465c54b98335f651cf4a931 | |
| author | Fredrik Johansson <fredrik.johansson@gmail.com> | |
| Mon, 18 Aug 2008 14:48:33 +0000 (18 16:48 +0200) | ||
| committer | Fredrik Johansson <fredrik.johansson@gmail.com> | |
| Mon, 18 Aug 2008 14:48:33 +0000 (18 16:48 +0200) | ||
| tree | b260ce4d285273db38a52b1533c83e16d9778bf8 | treesnapshot (tar.gz zip) |
| parent | 9cf81a668464d31e47942f880927ca0b5ad287df | commitdiff |
Make digits shown by str(Real) reflect the precision more accurately
* Only display an exponent (no mantissa) if decimal precision < 1
* Don't strip trailing zeros
Before:
>>> N(cos(Rational(1,10000)))
0.999999995
>>> N(fibonacci(1000) - GoldenRatio**1000/sqrt(5))
-4.0e+84
>>> N(10**90 + fibonacci(1000) - GoldenRatio**1000/sqrt(5))
1.0e+90
>>> N(10**95 + fibonacci(1000) - GoldenRatio**1000/sqrt(5))
1.0e+95
After:
>>> N(cos(Rational(1,10000)))
0.999999995000000
>>> N(fibonacci(1000) - GoldenRatio**1000/sqrt(5))
-.0e+84
>>> N(10**90 + fibonacci(1000) - GoldenRatio**1000/sqrt(5))
1.000e+90
>>> N(10**95 + fibonacci(1000) - GoldenRatio**1000/sqrt(5))
1.000000000e+95
Acked-by: Kirill Smelkov <kirr@landau.phys.spbu.ru>
* Only display an exponent (no mantissa) if decimal precision < 1
* Don't strip trailing zeros
Before:
>>> N(cos(Rational(1,10000)))
0.999999995
>>> N(fibonacci(1000) - GoldenRatio**1000/sqrt(5))
-4.0e+84
>>> N(10**90 + fibonacci(1000) - GoldenRatio**1000/sqrt(5))
1.0e+90
>>> N(10**95 + fibonacci(1000) - GoldenRatio**1000/sqrt(5))
1.0e+95
After:
>>> N(cos(Rational(1,10000)))
0.999999995000000
>>> N(fibonacci(1000) - GoldenRatio**1000/sqrt(5))
-.0e+84
>>> N(10**90 + fibonacci(1000) - GoldenRatio**1000/sqrt(5))
1.000e+90
>>> N(10**95 + fibonacci(1000) - GoldenRatio**1000/sqrt(5))
1.000000000e+95
Acked-by: Kirill Smelkov <kirr@landau.phys.spbu.ru>