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Calculating polynomial with asm and C

format ELF
section ".text" executable
public poly
align 4
poly:
a equ dword [ebp+8]
b equ dword [ebp+12]
c equ dword [ebp+16]
x equ dword [ebp+20]
    ;a*x*x+b*x+c
    push ebp
    mov ebp , esp
    fld c
    fld x
    fld b
    fld x
    fld a
    fmulp st1 , st0
    faddp st1 , st0
    fmulp st1 , st0
    faddp st1 , st0
    pop ebp
    ret

For calculating polynomial used polish notation Wiki In other words axx+bx+c to reduce operations changed to (ax+b)x+c and then written out operation by priorities [,+,*,+]. Compiling this with lines

fasm poly.asm poly.o
#include <stdio.h>
extern float poly( float , float , float , float );
int main()
{
    float res = poly( 1.0 , 2.0 , 3.0 , 3.0 );
    printf( "%f\n" , res );
    return 0;
}

Compiling this with lines

gcc -c main.c -o main.o

Combining

gcc main.o poly.o -o main

Update on 06.12.2009 After running dome C code with FPU calculations and -O2 flag

format ELF
section ".text" executable

public poly
align 4
poly:
a equ dword [ebp+8]
b equ dword [ebp+12]
c equ dword [ebp+16]
x equ dword [ebp+20]
    ;a*x*x+b*x+c
    push ebp
    mov ebp , esp

    fld a
    fmul x
    fadd b
    fmul x
    fadd c

    pop ebp
    ret

Now only 5 instructions

http://en.wikipedia.org/wiki/Polish_notation