xref: /aosp_15_r20/external/musl/src/math/i386/atan.s (revision c9945492fdd68bbe62686c5b452b4dc1be3f8453)
1*c9945492SAndroid Build Coastguard Worker.global atan
2*c9945492SAndroid Build Coastguard Worker.type atan,@function
3*c9945492SAndroid Build Coastguard Workeratan:
4*c9945492SAndroid Build Coastguard Worker	fldl 4(%esp)
5*c9945492SAndroid Build Coastguard Worker	mov 8(%esp),%eax
6*c9945492SAndroid Build Coastguard Worker	add %eax,%eax
7*c9945492SAndroid Build Coastguard Worker	cmp $0x00200000,%eax
8*c9945492SAndroid Build Coastguard Worker	jb 1f
9*c9945492SAndroid Build Coastguard Worker	fld1
10*c9945492SAndroid Build Coastguard Worker	fpatan
11*c9945492SAndroid Build Coastguard Worker	fstpl 4(%esp)
12*c9945492SAndroid Build Coastguard Worker	fldl 4(%esp)
13*c9945492SAndroid Build Coastguard Worker	ret
14*c9945492SAndroid Build Coastguard Worker		# subnormal x, return x with underflow
15*c9945492SAndroid Build Coastguard Worker1:	fsts 4(%esp)
16*c9945492SAndroid Build Coastguard Worker	ret
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