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Revision 1464, 0.6 kB
(checked in by smidl, 12 years ago)
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upravy choleskiho + nove qmath
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| 1 | #include "math.h" |
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| 2 | #include "fixed.h" |
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| 3 | |
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| 4 | typedef short int int16 ; |
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| 5 | typedef int int32 ; |
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| 6 | |
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| 7 | /* sin (theta), theta=-32768..32768 -> -pi,pi*/ |
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| 8 | int16 qsin(int16 theta){ |
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| 9 | int16 t_sin; |
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| 10 | int32 tmp; |
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| 11 | tmp = prevod(sin(3.141593*(theta)/32768.),15); |
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| 12 | if (tmp>32767) t_sin =32767; else t_sin=tmp; |
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| 13 | return t_sin; |
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| 14 | } |
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| 15 | int16 qcos(int16 theta){ |
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| 16 | int16 t_cos; |
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| 17 | int32 tmp; |
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| 18 | tmp = prevod(cos(3.141593*(theta)/32768.),15); |
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| 19 | if (tmp>32767) t_cos =32767; else t_cos=tmp; |
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| 20 | return t_cos; |
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| 21 | } |
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| 22 | int16 qsqrt(int16 x){ |
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| 23 | int16 tmp; |
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| 24 | tmp = prevod(sqrt((double)x/32768.),15); |
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| 25 | } |
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| 26 | int16 qlog(int16 x){ |
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| 27 | if (x<=0) |
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| 28 | return -32768; |
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| 29 | else |
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| 30 | return prevod(log(x/32768.),15); |
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| 31 | } |
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