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Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 32 |
1 files changed, 32 insertions, 0 deletions
@@ -35650,6 +35650,38 @@ that value is then added to the result accumulator. (rpoly 10 '(1 2 3)) -> 321 .cble +.coNP Function @ bignum-len +.synb +.mets (bignum-len << arg ) +.syne +.desc +The +.code bignum-len +function reports the machine-specific +.I "bignum order" +of the integer or character argument +.metn arg . + +If +.meta arg +is a character or +.code fixnum +integer, the function returns zero. + +Otherwise +.meta arg +is expected to be a +.code bignum +integer, and the function returns the number of "limbs" used for its +representation, a positive integer. + +Note: the +.code bignum-len +function is intended to be of use in algorithms whose performance +benefits from ordering the operations on multiple integer operands +according to the magnitudes of those operands. The function provides an +estimate of magnitude which trades accuracy for efficiency. + .SS* Bit Operations In \*(TL, similarly to Common Lisp, bit operations on integers are based on a concept that might be called "infinite two's-complement". |