2021-04-27 18:33:31 +02:00
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/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
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.data
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.align 2
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nan:
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.long 0xffffffff
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.byte 0xff
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.byte 0xff
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.byte 0xff
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.byte 0x7f
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.text
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.global atan2;
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atan2:
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fldl 4(%esp)
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fldl 12(%esp)
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ftst
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fnstsw %ax
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sahf
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jne doit
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fxch %st(1)
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ftst
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fnstsw %ax
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sahf
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je isanan
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fxch %st(1)
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doit:
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fpatan
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ret
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isanan:
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2021-06-09 05:17:46 +02:00
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movl $1, _errno
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2021-04-27 18:33:31 +02:00
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fstp %st(0)
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fstp %st(0)
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fldl nan
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ret
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