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1 | #include "slalib.h"
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2 | #include "slamac.h"
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3 | float slaVdv ( float va[3], float vb[3] )
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4 | /*
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5 | ** - - - - - - -
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6 | ** s l a V d v
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7 | ** - - - - - - -
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8 | **
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9 | ** Scalar product of two 3-vectors.
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10 | **
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11 | ** (single precision)
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12 | **
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13 | ** Given:
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14 | ** va float[3] first vector
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15 | ** vb float[3] second vector
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16 | **
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17 | ** The result is the scalar product va.vb (single precision).
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18 | **
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19 | ** Last revision: 15 July 1993
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20 | **
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21 | ** Copyright P.T.Wallace. All rights reserved.
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22 | */
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23 | {
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24 | return va[0] * vb[0] + va[1] * vb[1] + va[2] * vb[2];
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25 | }
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