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formating
2025 Apr 10
1
table() and as.character() performance for logical values
...?of?calls?of?C?functions?in?coerce.c?for?as.character(<logical>)?in?R:
do_asatomic
ascommon
coerceVector
coerceToString
StringFromLogical?(for?each?element)
The?definition?of?'StringFromLogical'?in?coerce.c?:
attribute_hidden?SEXP?StringFromLogical(int?x,?int?*warn)
{
????int?w;
????formatLogical(&x,?1,?&w);
????if?(x?==?NA_LOGICAL)?return?NA_STRING;
????else?return?mkChar(EncodeLogical(x,?w));
}
The?definition?of?'EncodeLogical'?in?printutils.c?:
const?char?*EncodeLogical(int?x,?int?w)
{
????static?char?buff[NB];
????if(x?==?NA_LOGICAL)?snprintf(buff,?NB,?"%*s&qu...