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add a note about undef values

This commit is contained in:
Yuichi Nishiwaki 2013-11-09 14:27:50 +09:00
parent 1126ec614f
commit 8a85e62472
1 changed files with 5 additions and 0 deletions
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5
include/picrin/value.h
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@ -3,6 +3,11 @@
typedef int pic_sym; typedef int pic_sym;
/**
* `undef` values never seen from user-end: that is,
* it's used only for repsenting internal special state
*/
enum pic_vtype { enum pic_vtype {
PIC_VTYPE_NIL = 1, PIC_VTYPE_NIL = 1,
PIC_VTYPE_TRUE, PIC_VTYPE_TRUE,