| 1 | /********************************************************************** <BR>
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| 2 | This file is part of Crack dot Com's free source code release of
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| 3 | Golgotha. <a href="http://www.crack.com/golgotha_release"> <BR> for
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| 4 | information about compiling & licensing issues visit this URL</a>
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| 5 | <PRE> If that doesn't help, contact Jonathan Clark at
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| 6 | golgotha_source@usa.net (Subject should have "GOLG" in it)
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| 7 | ***********************************************************************/
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| 8 |
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| 9 | #ifndef __NUM_TYPE_HPP_
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| 10 | #define __NUM_TYPE_HPP_
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| 11 |
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| 12 | #include "arch.hh"
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| 13 |
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| 14 | /*
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| 15 | Use i4_float instead of float so we can
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| 16 | substitute fixed point later on
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| 17 | */
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| 18 |
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| 19 | typedef float i4_float;
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| 20 | typedef float i4_angle; // stored in radians
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| 21 |
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| 22 | inline i4_float i4_fabs(const i4_float &x)
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| 23 | {
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| 24 | if (x<0)
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| 25 | return -x;
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| 26 | else return x;
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| 27 | }
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| 28 |
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| 29 | #ifdef WIN32
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| 30 | inline sw32 i4_f_to_i(i4_float f)
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| 31 | {
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| 32 | w16 i4_f_to_i_control_word_1;
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| 33 | w16 i4_f_to_i_control_word_2;
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| 34 | sw32 res;
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| 35 | __asm
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| 36 | {
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| 37 | fld f
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| 38 |
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| 39 | wait
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| 40 | fnstcw i4_f_to_i_control_word_1
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| 41 | wait
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| 42 |
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| 43 | mov ax,i4_f_to_i_control_word_1
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| 44 | or ah,0xC
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| 45 | mov word ptr i4_f_to_i_control_word_2,ax
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| 46 | fldcw i4_f_to_i_control_word_2
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| 47 | fistp res
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| 48 | fldcw i4_f_to_i_control_word_1
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| 49 | }
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| 50 | return res;
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| 51 | }
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| 52 |
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| 53 | inline sw32 i4_s_to_i(double f)
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| 54 | {
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| 55 | w16 i4_f_to_i_control_word_1;
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| 56 | w16 i4_f_to_i_control_word_2;
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| 57 | sw32 res;
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| 58 | __asm
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| 59 | {
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| 60 | fld qword ptr [f]
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| 61 |
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| 62 | fnstcw i4_f_to_i_control_word_1
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| 63 |
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| 64 | mov ax,i4_f_to_i_control_word_1
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| 65 | or ah,0xC
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| 66 | mov word ptr i4_f_to_i_control_word_2,ax
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| 67 | fldcw i4_f_to_i_control_word_2
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| 68 | fistp res
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| 69 | fldcw i4_f_to_i_control_word_1
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| 70 | }
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| 71 | return res;
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| 72 | }
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| 73 |
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| 74 | #else
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| 75 |
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| 76 | #define i4_f_to_i(a) (sw32)(a)
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| 77 | #define i4_d_to_i(a) (sw32)(a)
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| 78 |
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| 79 | #endif
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| 80 |
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| 81 | inline i4_float i4_interpolate(i4_float from, i4_float to, i4_float frac)
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| 82 | {
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| 83 | return (to - from)*frac + from;
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| 84 | }
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| 85 |
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| 86 | #endif
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