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Diffstat (limited to 'man/libzahl.7')
| -rw-r--r-- | man/libzahl.7 | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/man/libzahl.7 b/man/libzahl.7 index 6f7aa59..f6dc99e 100644 --- a/man/libzahl.7 +++ b/man/libzahl.7 @@ -25,6 +25,21 @@ them for reuse. .P With the exception of functions working with strings, all output parameters are before the input parameters. +.P +Like any self-respecting big number library, libzahl +supports assign values to variables that are also +input variables. However, keep in mind that commutative +functions are optimised for the first operand to also +be the output over the second operand to also be the +input. For example, \fIzadd(a,a,b)\fP should be faster +than \fIzadd(a,b,a)\fP, although both are supported. +Whether or not the function believe that it is more +likely to occur that the input variables are different +that the output variable than the output variable +being the first input variable depends on the function. +Some functions are implemented to believe that the +first is more likely, other fucntions are implemented +to believe that the latter is more likely. .SH RATIONALE GMP MP cannot be used for rubust programs. LibTomMath is too slow, probably because of all memory allocations, |