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Issue #1580: New free format floating point representation based on "Floating-Point Printer Sample Code", by Robert G. Burger. For example repr(11./5) now returns '2.2' instead of '2.2000000000000002'.

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Thanks to noam for the patch! I had to modify doubledigits.c slightly to support X64 and IA64 machines on Windows. I also added the new file to the three project files.
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Christian Heimes 2007-12-10 22:19:17 +00:00
parent b9f7f24c25
commit 827b35c9fe
9 changed files with 743 additions and 3 deletions
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4
Include/floatobject.h
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@ -76,6 +76,10 @@ PyAPI_FUNC(int) _PyFloat_Pack8(double x, unsigned char *p, int le);
*/
PyAPI_FUNC(int) _PyFloat_Repr(double x, char *p, size_t len);
/* Used to get the important decimal digits of a double */
PyAPI_FUNC(int) _PyFloat_Digits(char *buf, double v, int *signum);
PyAPI_FUNC(void) _PyFloat_DigitsInit(void);
/* The unpack routines read 4 or 8 bytes, starting at p. le is a bool
* argument, true if the string is in little-endian format (exponent
* last, at p+3 or p+7), false if big-endian (exponent first, at p).