diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 44 |
1 files changed, 44 insertions, 0 deletions
@@ -53668,6 +53668,50 @@ This symbol becomes the .code cptr object's type tag. +.coNP Function @ int-cptr +.synb +.mets (int-cptr << cptr ) +.syne +.desc +The +.code int-cptr +function retrieves the pointer value of the +.meta cptr +object as an integer. + +If an integer +.meta n +is in a range convertible to +.code cptr +type, then the expression +.cblk +.meti (int-cptr (cptr-int << n )) +.cble +reproduces +.metn n . + +.coNP Function @ cptr-cast +.synb +.mets (cptr-cast < type-symbol << cptr ) +.syne +.desc +The +.code cptr-cast +function produces a new +.code cptr +object which has the same pointer as +.meta cptr +but whose type is given by +.metn type-symbol . + +Casting +.meta cptr +objects with +.code cptr-cast +circumvents the safety mechanism which +.code cptr +type tagging provides. + .coNP Function @ cptr-zap .synb .mets (cptr-zap << cptr ) |