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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | /* Copyright (C) 1999 DJ Delorie, see COPYING.DJ for details */ |
| 2 | #include |
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| 3 | |||
| 4 | NaN: |
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| 5 | .long 0x00000000, 0xFFF80000 |
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| 6 | |||
| 7 | MK_C_SYM(sincos) |
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| 8 | |||
| 9 | /* void sincos(double *cosine, double *sine, double x); */ |
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| 10 | |||
| 11 | movl 16(%esp), %ecx |
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| 12 | |||
| 13 | movl 4(%esp), %eax /* Point to cosine. */ |
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| 14 | movl 8(%esp), %edx /* Point to sine. */ |
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| 15 | |||
| 16 | andl $0x7FF00000, %ecx /* Examine exponent of x. */ |
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| 17 | cmpl $0x43E00000, %ecx /* |x| >= 2^63 */ |
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| 18 | jae bigarg |
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| 19 | |||
| 20 | fldl 12(%esp) |
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| 21 | fsincos |
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| 22 | fstpl (%eax) /* cos */ |
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| 23 | fstpl (%edx) /* sin */ |
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| 24 | ret |
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| 25 | |||
| 26 | bigarg: |
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| 27 | cmpl $0x7FF00000, %ecx /* x is INF or NaN. */ |
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| 28 | jb finite |
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| 29 | movl NaN, %ecx /* Return -NaN */ |
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| 30 | movl %ecx, (%eax) |
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| 31 | movl %ecx, (%edx) |
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| 32 | movl NaN+4, %ecx |
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| 33 | movl %ecx, 4(%eax) |
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| 34 | movl %ecx, 4(%edx) |
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| 35 | movl $1, C_SYM(errno) |
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| 36 | ret |
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| 37 | |||
| 38 | finite: |
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| 39 | fld1 |
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| 40 | fstpl (%eax) /* cos = 1. */ |
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| 41 | fldz |
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| 42 | fstpl (%edx) /* sin = 0. */ |
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| 43 | ret |