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.global atanf
.type atanf,@function
atanf:
flds 4(%esp)
mov 4(%esp),%eax
add %eax,%eax
cmp $0x01000000,%eax
jb 1f
fld1
fpatan
fstps 4(%esp)
flds 4(%esp)
ret
# subnormal x, return x with underflow
1: fld %st(0)
fmul %st(1)
fstps 4(%esp)
ret
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