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|
%ifndef _TYPES_ASM
%define _TYPES_ASM
isalpha:
push bp
mov bp, sp
push ax
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
cmp ax, 40h
jl .no
cmp ax, 7Ah ; 40h..7Ah (A..z, ascii)
jg .no
.yes:
clc ; clear carry (is alpha)
jmp .return
.no:
stc ; set carry (not alpha)
.return:
pop ax
mov sp, bp
pop bp
ret
isalnum:
push bp
mov bp, sp
push ax
clc ; clear carry
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
push ax
call isalpha
jc .no
call isdigit
jc .no
.yes:
clc ; clear carry (is alphanumeric)
jmp .return
.no:
stc ; set carry (not alphanumeric)
.return:
add sp, 2
pop ax
mov sp, bp
pop bp
ret
isascii:
push bp
mov bp, sp
push ax
clc ; clear carry
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
cmp ax, 00h
jl .no
cmp ax, 80h ; 00h..80h (standard ascii)
jg .no
.yes:
clc ; clear carry (is ascii)
jmp .return
.no:
stc ; set carry (not ascii)
.return:
add sp, 2
pop ax
mov sp, bp
pop bp
ret
isblank:
push bp
mov bp, sp
push ax
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
cmp ax, 09h ; 09h ('\t', ascii)
je .yes
cmp ax, 0Ah ; 0Ah ('\n', ascii)
je .yes
cmp ax, 0Dh ; 0Dh ('\r', ascii)
je .yes
cmp ax, 20h ; 20h (' ', ascii)
je .yes
jmp .no ; no match
.yes:
clc ; clear carry (is space)
jmp .return
.no:
stc ; set carry (not space)
.return:
pop ax
mov sp, bp
pop bp
ret
iscntrl:
push bp
mov bp, sp
push ax
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
cmp ax, 00h
jl .no
cmp ax, 1fh ; 00h..1fh (ascii control codes)
jg .no
.yes:
clc ; clear carry (is a control code)
jmp .return
.no:
stc ; set carry (not a control code)
.return:
pop ax
mov sp, bp
pop bp
ret
isdigit:
push bp
mov bp, sp
push ax
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
sub ax, '0'
cmp ax, 0
jl .no
cmp ax, 9 ; 30h..39h (0..9, ascii)
jg .no
.yes:
clc ; clear carry (is a digit)
jmp .return
.no:
stc ; set carry (not a digit)
.return:
pop ax
mov sp, bp
pop bp
ret
isgraph:
push bp
mov bp, sp
push ax
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
cmp ax, 21h
jl .no
cmp ax, 0FFh ; 21h..0FFh (graphical chars, except space)
jg .no
.yes:
clc ; clear carry (is graphical)
jmp .return
.no:
stc ; set carry (not graphical)
.return:
pop ax
mov sp, bp
pop bp
ret
islower:
push bp
mov bp, sp
push ax
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
cmp ax, 'a'
jl .no
cmp ax, 'z' ; 61h..7Ah (a..z, ascii)
jg .no
.yes:
clc ; clear carry (is lowercase)
jmp .return
.no:
stc ; set carry (not lowercase)
.return:
pop ax
mov sp, bp
pop bp
ret
isprint:
push bp
mov bp, sp
push ax
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
cmp ax, 20h
jl .no
cmp ax, 0FFh ; 20h..0FFh (graphical chars, including space)
jg .no
.yes:
clc ; clear carry (is graphical)
jmp .return
.no:
stc ; set carry (not graphical)
.return:
pop ax
mov sp, bp
pop bp
ret
ispunct:
push bp
mov bp, sp
push ax
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
push ax
call isalnum ; should not be alphanumeric
jc .no
call isblank ; should not be blank
jc .no
cmp ax, 21h ; 21h ('!', ascii)
jl .no
cmp ax, 40h ; 40h ('@')
jg .no
jmp .yes ; other possibilities exhausted
; this must be punctuation of some kind
.yes:
add sp, 2
clc ; clear carry (is punctuation)
jmp .return
.no:
add sp, 2
stc ; set carry (not punctuation)
.return:
pop ax
mov sp, bp
pop bp
ret
isupper:
push bp
mov bp, sp
push ax
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
cmp ax, 'A'
jl .no
cmp ax, 'Z' ; 41h..5Ah (A..Z, ascii)
jg .no
.yes:
clc ; clear carry (is uppercase)
jmp .return
.no:
stc ; set carry (not uppercase)
.return:
pop ax
mov sp, bp
pop bp
ret
isxdigit:
push bp
mov bp, sp
push ax
xor ax, ax ; initialize AX
mov ax, [bp + 4] ; value to test
push ax
call isdigit
jnc .yes
.check_hexalpha_upper:
cmp ax, 'A'
jl .no
cmp ax, 'F' ; 41h..46h (A..F, ascii)
jg .check_hexalpha_lower
jmp .yes
.check_hexalpha_lower:
cmp ax, 'a'
jl .no
cmp ax, 'f' ; 61h..66h (a..f, ascii)
jg .no
.yes:
add sp, 2
clc ; clear carry (is hex)
jmp .return
.no:
add sp, 2
stc ; set carry (not hex)
.return:
pop ax
mov sp, bp
pop bp
ret
%endif
|
