.intel_syntax noprefix
.globl main
main:
    sub esp, 16               # allocate space for i, sum and fmt
    mov dword ptr [esp+4], -1 # i
    fild dword ptr [limit]    # limit
    fldz                      # sum
1:
    inc dword ptr [esp+4]     # i += 1
    fild dword ptr [esp+4]    # i
    fmul qword ptr [factor]   # i * factor
    fsin
    faddp                     # add to sum
    fcomi st, st(1)           # check if below limit
    jb 1b
    fstp qword ptr [esp+8]    # store on stack for printf
    fstp st(0)                # remove limit from fpu stack
    mov dword ptr [esp], offset fmt
    call printf
    add esp, 16               # clean up stack
    xor eax, eax              # return value
    ret
 
.data
factor: .double .08726646259971647884 # 5 * PI / 180
limit: .int 3
fmt: .string "i=%d sum=%g\n"
 

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