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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | /* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */ |
| 2 | #include |
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| 3 | |||
| 4 | .data |
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| 5 | .align 2 |
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| 6 | nan: |
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| 7 | .long 0xffffffff |
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| 8 | .byte 0xff |
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| 9 | .byte 0xff |
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| 10 | .byte 0xff |
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| 11 | .byte 0x7f |
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| 12 | |||
| 13 | .text |
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| 14 | MK_C_SYM(atan2) |
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| 15 | fldl 4(%esp) |
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| 16 | fldl 12(%esp) |
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| 17 | ftst |
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| 18 | fnstsw %ax |
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| 19 | sahf |
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| 20 | jne doit |
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| 21 | fxch %st(1) |
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| 22 | ftst |
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| 23 | fnstsw %ax |
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| 24 | sahf |
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| 25 | je isanan |
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| 26 | fxch %st(1) |
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| 27 | doit: |
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| 28 | fpatan |
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| 29 | ret |
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| 30 | isanan: |
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| 31 | movl $1,C_SYM(errno) |
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| 32 | fstp %st(0) |
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| 33 | fstp %st(0) |
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| 34 | fldl nan |
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| 35 | ret |