ref: a51b1a2f1399798193e3d788d9f3fb8bb9f3ac5c
dir: /macros/const.asm/
; Enumerate constants
const_def: MACRO
if _NARG >= 1
const_value = \1
else
const_value = 0
endc
if _NARG >= 2
const_inc = \2
else
const_inc = 1
endc
ENDM
const: MACRO
\1 EQU const_value
const_value = const_value + const_inc
ENDM
shift_const: MACRO
\1 EQU (1 << const_value)
const_value = const_value + const_inc
ENDM
const_skip: MACRO
if _NARG >= 1
const_value = const_value + const_inc * (\1)
else
const_value = const_value + const_inc
endc
ENDM
const_next: MACRO
if (const_value > 0 && \1 < const_value) || (const_value < 0 && \1 > const_value)
fail "const_next cannot go backwards from {const_value} to \1"
else
const_value = \1
endc
ENDM