X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=chiark-tcl.git;a=blobdiff_plain;f=base%2Fchiark-tcl.h;h=23cad209c11840758e99052d62198efd632bca04;hp=f542fe035364148ad2b51a9ccc9dd4d5cdf7995e;hb=29d695bbfb0f42019af456fc8a7a3137e9745806;hpb=05bed2aad2154e0e8c084789387bf900c5ee513b diff --git a/base/chiark-tcl.h b/base/chiark-tcl.h index f542fe0..23cad20 100644 --- a/base/chiark-tcl.h +++ b/base/chiark-tcl.h @@ -14,6 +14,28 @@ * (too short? error) * * hbytes range VALUE START SIZE => substring (or error) + * hbytes overwrite VAR START VALUE + * hbytes repeat VALUE COUNT => COUNT copies of VALUE + * + * hbytes h2ulong HEX => ulong (HEX len must be 4) + * hbytes ulong2h UL => hex + * + * ulong ul2bitfields VALUE [SIZE TYPE [TYPE-ARG...] ...] => 0/1 + * ulong bitfields2ul BASE [SIZE TYPE [TYPE-ARG...] ...] => ULONG + * goes from left (MSbit) to right (LSbit) where + * SIZE is size in bits + * TYPE [TYPE-ARGS...] is as below + * zero + * ignore + * fixed ULONG-VALUE + * uint VARNAME/VALUE (VARNAME if ul2bitfields; + * ulong VARNAME/VALUE VALUE if bitfields2ul) + * + * ulong ul2int ULONG => INT can fail if >INT_MAX + * ulong int2ul INT => ULONG can fail if <0 + * + * hbytes shift l|r ULONG BITS fails if BITS >32 + * hbytes mask A B => A & B * * hbytes compare A B * => -2 A is lexically earlier than B and not a prefix of B (A