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| 1 // Copyright 2010 The Go Authors. All rights reserved. | 1 // Copyright 2010 The Go Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style | 2 // Use of this source code is governed by a BSD-style |
| 3 // license that can be found in the LICENSE file. | 3 // license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #include "../../cmd/ld/textflag.h" | 5 #include "textflag.h" |
| 6 | 6 |
| 7 // func Hypot(p, q float64) float64 | 7 // func Hypot(p, q float64) float64 |
| 8 TEXT ·Hypot(SB),NOSPLIT,$0 | 8 TEXT ·Hypot(SB),NOSPLIT,$0 |
| 9 // test bits for not-finite | 9 // test bits for not-finite |
| 10 MOVL p_hi+4(FP), AX // high word p | 10 MOVL p_hi+4(FP), AX // high word p |
| 11 ANDL $0x7ff00000, AX | 11 ANDL $0x7ff00000, AX |
| 12 CMPL AX, $0x7ff00000 | 12 CMPL AX, $0x7ff00000 |
| 13 JEQ not_finite | 13 JEQ not_finite |
| 14 MOVL q_hi+12(FP), AX // high word q | 14 MOVL q_hi+12(FP), AX // high word q |
| 15 ANDL $0x7ff00000, AX | 15 ANDL $0x7ff00000, AX |
| (...skipping 34 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 50 ANDL $0x7fffffff, AX | 50 ANDL $0x7fffffff, AX |
| 51 CMPL AX, $0x7ff00000 | 51 CMPL AX, $0x7ff00000 |
| 52 JEQ is_inf | 52 JEQ is_inf |
| 53 MOVL $0x7ff80000, ret_hi+20(FP) // return NaN = 0x7FF8000000000001 | 53 MOVL $0x7ff80000, ret_hi+20(FP) // return NaN = 0x7FF8000000000001 |
| 54 MOVL $0x00000001, ret_lo+16(FP) | 54 MOVL $0x00000001, ret_lo+16(FP) |
| 55 RET | 55 RET |
| 56 is_inf: | 56 is_inf: |
| 57 MOVL AX, ret_hi+20(FP) // return +Inf = 0x7FF0000000000000 | 57 MOVL AX, ret_hi+20(FP) // return +Inf = 0x7FF0000000000000 |
| 58 MOVL $0x00000000, ret_lo+16(FP) | 58 MOVL $0x00000000, ret_lo+16(FP) |
| 59 RET | 59 RET |
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