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553 | serge | 1 | ;***************************************************************************** |
2 | ;* |
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3 | ;* Open Watcom Project |
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4 | ;* |
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5 | ;* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. |
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6 | ;* |
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7 | ;* ======================================================================== |
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8 | ;* |
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9 | ;* This file contains Original Code and/or Modifications of Original |
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10 | ;* Code as defined in and that are subject to the Sybase Open Watcom |
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11 | ;* Public License version 1.0 (the 'License'). You may not use this file |
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12 | ;* except in compliance with the License. BY USING THIS FILE YOU AGREE TO |
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13 | ;* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is |
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14 | ;* provided with the Original Code and Modifications, and is also |
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15 | ;* available at www.sybase.com/developer/opensource. |
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16 | ;* |
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17 | ;* The Original Code and all software distributed under the License are |
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18 | ;* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
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19 | ;* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM |
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20 | ;* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
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21 | ;* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR |
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22 | ;* NON-INFRINGEMENT. Please see the License for the specific language |
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23 | ;* governing rights and limitations under the License. |
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24 | ;* |
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25 | ;* ======================================================================== |
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26 | ;* |
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27 | ;* Description: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE |
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28 | ;* DESCRIBE IT HERE! |
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29 | ;* |
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30 | ;***************************************************************************** |
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31 | |||
32 | |||
33 | include mdef.inc |
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34 | include struct.inc |
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35 | |||
36 | .8087 |
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37 | modstart _7u8f386 |
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38 | |||
39 | xdefp __U8FD7 |
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40 | xdefp __U8FS7 |
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41 | |||
42 | ;;;;two_to_64 dw 0000h, 0000h, 0000h, 43f0h ; removed by JBS |
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43 | |||
44 | ULLMXP1: |
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45 | DB 00H, 00H, 80H, 5FH ; (float)(ULONGLONG_MAX +1) |
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46 | ; (only exponent set) |
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47 | |||
48 | defpe __U8FS7 |
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49 | push edx ; save unsigned int64 (hi) |
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50 | push eax ; save unsigned int64 (lo) |
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51 | fild qword ptr [esp] ; load as int64 |
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52 | test byte ptr 07H[esp],80H ; most significant bit set? |
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53 | jns L$2 ; no, jump |
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54 | fadd dword ptr cs:ULLMXP1 ; correct int64 to unsigned int64 as |
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55 | ; as float (because expression is exact |
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56 | ; in powers of 2, so save 4 bytes) |
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57 | L$2: |
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58 | pop eax ; correct stack |
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59 | fstp dword ptr [esp] ; save float and pop coproc stack |
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60 | pop eax ; return float in eax |
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61 | ret |
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62 | endproc __U8FS7 |
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63 | |||
64 | defpe __U8FD7 |
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65 | push edx ; save unsigned int64 (hi) |
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66 | push eax ; save unsigned int64 (lo) |
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67 | fild qword ptr [esp] ; load as int64 |
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68 | test byte ptr 07H[esp],80H ; most significant bit set? |
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69 | jns L$3 ; no, jump |
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70 | fadd dword ptr cs:ULLMXP1 ; correct int64 to unsigned int64 as |
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71 | ; as float (because expression is exact |
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72 | ; in powers of 2, so save 4 bytes) |
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73 | L$3: |
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74 | fstp qword ptr [esp] ; save double and pop coproc stack |
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75 | pop eax ; return double (lo) |
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76 | pop edx ; return double (hi) |
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77 | ret |
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78 | endproc __U8FD7 |
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79 | |||
80 | endmod |
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81 | end |