assembly - TASM Math coprocessor FSUB not substracting -

-

i encounter difficulties using math coprocessor. need calculate area of triangle using heron's formula (s=sqrt(p(p-a)(p-b)(p-c)), p semiperimeter , a, b , c triangle's sides). read a, b, c , calculate p have problems in substracting a, b , c p. code:

data segment para public 'data' dd 0 b dd 0 c dd 0 p dd 0 pa dd 0 ; p-a pb dd 0 ;p-b pc dd 0 ;p-c area dd 0 2 dd 2 aux dd 0 data ends  read macro x, aux ; reading macro a, b , c. goes fine local r, final push eax push ebx push edx mov x, 0 mov ebx, 10 r:    mov ah, 1h    int 21h    cmp al, 0dh    je final    cmp al,30h    jb r    cmp al, 39h    ja r    sub al, 48    xor ah,ah    mov aux,eax    mov eax, x    mul ebx    add eax, aux    mov x, eax    jmp r  final:  pop edx pop ebx pop eax endm  code segment para public 'code' .386 start proc far assume cs:code, ds:data push ds xor ax,ax push ax mov ax,data mov ds,ax  read a, aux read b, aux read c, aux  finit fld fadd b fadd c fdiv 2 fstp p ;p computed fld p fsub ; here problem. seems doesn't subtract fstp pa fld p fsub b ; also, same problem here fstp pb fld p fsub c ;also, same problem here fstp pc fld p fmul pa fmul pb fmul pc fsqrt fstp area fwait  ret start endp code ends end start


Comments

Post a Comment

Popular posts from this blog

ruby - Trying to change last to "x"s to 23 -

-
i have been playing around irb , have string looks this: irb(main):072:0> puts ["[\"4354 5432 5432 xxxxx\", \"6547 6547 8543 xxxxx\", \"2344 6543 6674 xxxxx\", \"2346 6236 7543 xxxxx\", \"1273 5585 5587 xxxxx\"]"] => nil irb(main):073:0> what want gsub last 2 "x" s of each 17 digit combination, 23 . what i've tried far (i've been using rubular): a.gsub(/\d[x]/,"23") <= grabs "x" s i'm close a.gsub(/\w[x{2}]/,"23") <= grabs "x" s grabs two digits each combination. is there easier way i'm not understanding? a.gsub(/\d{4} \d{4} \d{4} xxx\kxx/, '23') \d{4} = 4 digits what \k drop matched far. can use don't replace entire number, still able validate have in desired format.
Read more

jquery - Clone last and append item to closest class -

-
this bare-bones code on page: <div class="list-container"> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> </div> <p><button class="add-list-item">add</button></p> <div class="list-container"> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> </div> <p><button class="add-list-item">add</button></p> <di...
Read more

css - Can I use the :after pseudo-element on an input field? -

-
i trying use :after css pseudo-element on input field, not work. if use span , works ok. <style type="text/css"> .mystyle:after {content:url(smiley.gif);} .mystyle {color:red;} </style> this works (puts smiley after "buu!" , before "some more") <span class="mystyle">buuu!</span>a more this not work - colors somevalue in red, there no smiley. <input class="mystyle" type="text" value="somevalue"> what doing wrong? should use pseudo-selector? note: cannot add span around input , because being generated third-party control. :after , :before not supported in internet explorer 7 , under, on elements. it's not meant used on replaced elements such form elements (inputs) , image elements . in other words it's impossible pure css. however if using jquery can use $(".mystyle").after("add smiley here"); api docs on .after to ...
Read more