File content as of revision 0:1014af42efd9:

/* ----------------------------------------------------------------------  
* Copyright (C) 2010 ARM Limited. All rights reserved.  
*  
* $Date:        29. November 2010  
* $Revision: 	V1.0.3  
*  
* Project: 	    CMSIS DSP Library  
* Title:		arm_sin_cos_f32.c  
*  
* Description:	Sine and Cosine calculation for floating-point values. 
*  
* Target Processor: Cortex-M4/Cortex-M3
*  
* Version 1.0.3 2010/11/29 
*    Re-organized the CMSIS folders and updated documentation.  
*   
* Version 1.0.2 2010/11/11  
*    Documentation updated.   
*  
* Version 1.0.1 2010/10/05   
*    Production release and review comments incorporated.  
*  
* Version 1.0.0 2010/09/20   
*    Production release and review comments incorporated.  
* -------------------------------------------------------------------- */ 
 
#include "arm_math.h" 
 
/**  
 * @ingroup groupController  
 */ 
 
/**  
 * @defgroup SinCos Sine Cosine 
 *  
 * Computes the trigonometric sine and cosine values using a combination of table lookup 
 * and linear interpolation.   
 * There are separate functions for Q31 and floating-point data types. 
 * The input to the floating-point version is in degrees while the 
 * fixed-point Q31 have a scaled input with the range 
 * [-1 1) mapping to [-180 180) degrees. 
 * 
 * The implementation is based on table lookup using 360 values together with linear interpolation. 
 * The steps used are: 
 *  -# Calculation of the nearest integer table index. 
 *  -# Compute the fractional portion (fract) of the input. 
 *  -# Fetch the value corresponding to \c index from sine table to \c y0 and also value from \c index+1 to \c y1.    
 *  -# Sine value is computed as <code> *psinVal = y0 + (fract * (y1 - y0))</code>.  
 *  -# Fetch the value corresponding to \c index from cosine table to \c y0 and also value from \c index+1 to \c y1.    
 *  -# Cosine value is computed as <code> *pcosVal = y0 + (fract * (y1 - y0))</code>.  
 */ 
 
 /**  
 * @addtogroup SinCos  
 * @{  
 */ 
 
 
/**  
* \par  
* Cosine Table is generated from following loop  
* <pre>for(i = 0; i < 360; i++)  
* {  
*    cosTable[i]= cos((i-180) * PI/180.0);  
* } </pre> 
*/ 
 
static const float32_t cosTable[360] = { 
  -0.999847695156391270f, -0.999390827019095760f, -0.998629534754573830f, 
  -0.997564050259824200f, -0.996194698091745550f, -0.994521895368273290f, 
  -0.992546151641321980f, -0.990268068741570250f, 
  -0.987688340595137660f, -0.984807753012208020f, -0.981627183447663980f, 
  -0.978147600733805690f, -0.974370064785235250f, -0.970295726275996470f, 
  -0.965925826289068200f, -0.961261695938318670f, 
  -0.956304755963035440f, -0.951056516295153530f, -0.945518575599316740f, 
  -0.939692620785908320f, -0.933580426497201740f, -0.927183854566787310f, 
  -0.920504853452440150f, -0.913545457642600760f, 
  -0.906307787036649940f, -0.898794046299167040f, -0.891006524188367790f, 
  -0.882947592858926770f, -0.874619707139395740f, -0.866025403784438710f, 
  -0.857167300702112220f, -0.848048096156425960f, 
  -0.838670567945424160f, -0.829037572555041620f, -0.819152044288991580f, 
  -0.809016994374947340f, -0.798635510047292940f, -0.788010753606721900f, 
  -0.777145961456970680f, -0.766044443118977900f, 
  -0.754709580222772010f, -0.743144825477394130f, -0.731353701619170460f, 
  -0.719339800338651300f, -0.707106781186547460f, -0.694658370458997030f, 
  -0.681998360062498370f, -0.669130606358858240f, 
  -0.656059028990507500f, -0.642787609686539360f, -0.629320391049837280f, 
  -0.615661475325658290f, -0.601815023152048380f, -0.587785252292473030f, 
  -0.573576436351045830f, -0.559192903470746680f, 
  -0.544639035015027080f, -0.529919264233204790f, -0.515038074910054270f, 
  -0.499999999999999780f, -0.484809620246337000f, -0.469471562785890530f, 
  -0.453990499739546750f, -0.438371146789077510f, 
  -0.422618261740699330f, -0.406736643075800100f, -0.390731128489273600f, 
  -0.374606593415912070f, -0.358367949545300270f, -0.342020143325668710f, 
  -0.325568154457156420f, -0.309016994374947340f, 
  -0.292371704722736660f, -0.275637355816999050f, -0.258819045102520850f, 
  -0.241921895599667790f, -0.224951054343864810f, -0.207911690817759120f, 
  -0.190808995376544800f, -0.173648177666930300f, 
  -0.156434465040231040f, -0.139173100960065350f, -0.121869343405147370f, 
  -0.104528463267653330f, -0.087155742747658235f, -0.069756473744125330f, 
  -0.052335956242943620f, -0.034899496702500733f, 
  -0.017452406437283477f, 0.000000000000000061f, 0.017452406437283376f, 
  0.034899496702501080f, 0.052335956242943966f, 0.069756473744125455f, 
  0.087155742747658138f, 0.104528463267653460f, 
  0.121869343405147490f, 0.139173100960065690f, 0.156434465040230920f, 
  0.173648177666930410f, 0.190808995376544920f, 0.207911690817759450f, 
  0.224951054343864920f, 0.241921895599667900f, 
  0.258819045102520740f, 0.275637355816999160f, 0.292371704722736770f, 
  0.309016994374947450f, 0.325568154457156760f, 0.342020143325668820f, 
  0.358367949545300380f, 0.374606593415911960f, 
  0.390731128489273940f, 0.406736643075800210f, 0.422618261740699440f, 
  0.438371146789077460f, 0.453990499739546860f, 0.469471562785890860f, 
  0.484809620246337110f, 0.500000000000000110f, 
  0.515038074910054380f, 0.529919264233204900f, 0.544639035015027200f, 
  0.559192903470746790f, 0.573576436351046050f, 0.587785252292473140f, 
  0.601815023152048270f, 0.615661475325658290f, 
  0.629320391049837500f, 0.642787609686539360f, 0.656059028990507280f, 
  0.669130606358858240f, 0.681998360062498480f, 0.694658370458997370f, 
  0.707106781186547570f, 0.719339800338651190f, 
  0.731353701619170570f, 0.743144825477394240f, 0.754709580222772010f, 
  0.766044443118978010f, 0.777145961456970900f, 0.788010753606722010f, 
  0.798635510047292830f, 0.809016994374947450f, 
  0.819152044288991800f, 0.829037572555041620f, 0.838670567945424050f, 
  0.848048096156425960f, 0.857167300702112330f, 0.866025403784438710f, 
  0.874619707139395740f, 0.882947592858926990f, 
  0.891006524188367900f, 0.898794046299167040f, 0.906307787036649940f, 
  0.913545457642600870f, 0.920504853452440370f, 0.927183854566787420f, 
  0.933580426497201740f, 0.939692620785908430f, 
  0.945518575599316850f, 0.951056516295153530f, 0.956304755963035440f, 
  0.961261695938318890f, 0.965925826289068310f, 0.970295726275996470f, 
  0.974370064785235250f, 0.978147600733805690f, 
  0.981627183447663980f, 0.984807753012208020f, 0.987688340595137770f, 
  0.990268068741570360f, 0.992546151641321980f, 0.994521895368273290f, 
  0.996194698091745550f, 0.997564050259824200f, 
  0.998629534754573830f, 0.999390827019095760f, 0.999847695156391270f, 
  1.000000000000000000f, 0.999847695156391270f, 0.999390827019095760f, 
  0.998629534754573830f, 0.997564050259824200f, 
  0.996194698091745550f, 0.994521895368273290f, 0.992546151641321980f, 
  0.990268068741570360f, 0.987688340595137770f, 0.984807753012208020f, 
  0.981627183447663980f, 0.978147600733805690f, 
  0.974370064785235250f, 0.970295726275996470f, 0.965925826289068310f, 
  0.961261695938318890f, 0.956304755963035440f, 0.951056516295153530f, 
  0.945518575599316850f, 0.939692620785908430f, 
  0.933580426497201740f, 0.927183854566787420f, 0.920504853452440370f, 
  0.913545457642600870f, 0.906307787036649940f, 0.898794046299167040f, 
  0.891006524188367900f, 0.882947592858926990f, 
  0.874619707139395740f, 0.866025403784438710f, 0.857167300702112330f, 
  0.848048096156425960f, 0.838670567945424050f, 0.829037572555041620f, 
  0.819152044288991800f, 0.809016994374947450f, 
  0.798635510047292830f, 0.788010753606722010f, 0.777145961456970900f, 
  0.766044443118978010f, 0.754709580222772010f, 0.743144825477394240f, 
  0.731353701619170570f, 0.719339800338651190f, 
  0.707106781186547570f, 0.694658370458997370f, 0.681998360062498480f, 
  0.669130606358858240f, 0.656059028990507280f, 0.642787609686539360f, 
  0.629320391049837500f, 0.615661475325658290f, 
  0.601815023152048270f, 0.587785252292473140f, 0.573576436351046050f, 
  0.559192903470746790f, 0.544639035015027200f, 0.529919264233204900f, 
  0.515038074910054380f, 0.500000000000000110f, 
  0.484809620246337110f, 0.469471562785890860f, 0.453990499739546860f, 
  0.438371146789077460f, 0.422618261740699440f, 0.406736643075800210f, 
  0.390731128489273940f, 0.374606593415911960f, 
  0.358367949545300380f, 0.342020143325668820f, 0.325568154457156760f, 
  0.309016994374947450f, 0.292371704722736770f, 0.275637355816999160f, 
  0.258819045102520740f, 0.241921895599667900f, 
  0.224951054343864920f, 0.207911690817759450f, 0.190808995376544920f, 
  0.173648177666930410f, 0.156434465040230920f, 0.139173100960065690f, 
  0.121869343405147490f, 0.104528463267653460f, 
  0.087155742747658138f, 0.069756473744125455f, 0.052335956242943966f, 
  0.034899496702501080f, 0.017452406437283376f, 0.000000000000000061f, 
  -0.017452406437283477f, -0.034899496702500733f, 
  -0.052335956242943620f, -0.069756473744125330f, -0.087155742747658235f, 
  -0.104528463267653330f, -0.121869343405147370f, -0.139173100960065350f, 
  -0.156434465040231040f, -0.173648177666930300f, 
  -0.190808995376544800f, -0.207911690817759120f, -0.224951054343864810f, 
  -0.241921895599667790f, -0.258819045102520850f, -0.275637355816999050f, 
  -0.292371704722736660f, -0.309016994374947340f, 
  -0.325568154457156420f, -0.342020143325668710f, -0.358367949545300270f, 
  -0.374606593415912070f, -0.390731128489273600f, -0.406736643075800100f, 
  -0.422618261740699330f, -0.438371146789077510f, 
  -0.453990499739546750f, -0.469471562785890530f, -0.484809620246337000f, 
  -0.499999999999999780f, -0.515038074910054270f, -0.529919264233204790f, 
  -0.544639035015027080f, -0.559192903470746680f, 
  -0.573576436351045830f, -0.587785252292473030f, -0.601815023152048380f, 
  -0.615661475325658290f, -0.629320391049837280f, -0.642787609686539360f, 
  -0.656059028990507500f, -0.669130606358858240f, 
  -0.681998360062498370f, -0.694658370458997030f, -0.707106781186547460f, 
  -0.719339800338651300f, -0.731353701619170460f, -0.743144825477394130f, 
  -0.754709580222772010f, -0.766044443118977900f, 
  -0.777145961456970680f, -0.788010753606721900f, -0.798635510047292940f, 
  -0.809016994374947340f, -0.819152044288991580f, -0.829037572555041620f, 
  -0.838670567945424160f, -0.848048096156425960f, 
  -0.857167300702112220f, -0.866025403784438710f, -0.874619707139395740f, 
  -0.882947592858926770f, -0.891006524188367790f, -0.898794046299167040f, 
  -0.906307787036649940f, -0.913545457642600760f, 
  -0.920504853452440150f, -0.927183854566787310f, -0.933580426497201740f, 
  -0.939692620785908320f, -0.945518575599316740f, -0.951056516295153530f, 
  -0.956304755963035440f, -0.961261695938318670f, 
  -0.965925826289068200f, -0.970295726275996470f, -0.974370064785235250f, 
  -0.978147600733805690f, -0.981627183447663980f, -0.984807753012208020f, 
  -0.987688340595137660f, -0.990268068741570250f, 
  -0.992546151641321980f, -0.994521895368273290f, -0.996194698091745550f, 
  -0.997564050259824200f, -0.998629534754573830f, -0.999390827019095760f, 
  -0.999847695156391270f, -1.000000000000000000f 
}; 
 
/**  
* \par  
* Sine Table is generated from following loop  
* <pre>for(i = 0; i < 360; i++)  
* {  
*    sinTable[i]= sin((i-180) * PI/180.0);  
* } </pre>  
*/ 
 
 
static const float32_t sinTable[360] = { 
  -0.017452406437283439f, -0.034899496702500699f, -0.052335956242943807f, 
  -0.069756473744125524f, -0.087155742747658638f, -0.104528463267653730f, 
  -0.121869343405147550f, -0.139173100960065740f, 
  -0.156434465040230980f, -0.173648177666930280f, -0.190808995376544970f, 
  -0.207911690817759310f, -0.224951054343864780f, -0.241921895599667730f, 
  -0.258819045102521020f, -0.275637355816999660f, 
  -0.292371704722737050f, -0.309016994374947510f, -0.325568154457156980f, 
  -0.342020143325668880f, -0.358367949545300210f, -0.374606593415912240f, 
  -0.390731128489274160f, -0.406736643075800430f, 
  -0.422618261740699500f, -0.438371146789077290f, -0.453990499739546860f, 
  -0.469471562785891080f, -0.484809620246337170f, -0.499999999999999940f, 
  -0.515038074910054380f, -0.529919264233204900f, 
  -0.544639035015026860f, -0.559192903470746900f, -0.573576436351046380f, 
  -0.587785252292473250f, -0.601815023152048160f, -0.615661475325658400f, 
  -0.629320391049837720f, -0.642787609686539470f, 
  -0.656059028990507280f, -0.669130606358858350f, -0.681998360062498590f, 
  -0.694658370458997140f, -0.707106781186547570f, -0.719339800338651410f, 
  -0.731353701619170570f, -0.743144825477394240f, 
  -0.754709580222771790f, -0.766044443118978010f, -0.777145961456971010f, 
  -0.788010753606722010f, -0.798635510047292720f, -0.809016994374947450f, 
  -0.819152044288992020f, -0.829037572555041740f, 
  -0.838670567945424050f, -0.848048096156426070f, -0.857167300702112330f, 
  -0.866025403784438710f, -0.874619707139395850f, -0.882947592858927100f, 
  -0.891006524188367900f, -0.898794046299166930f, 
  -0.906307787036650050f, -0.913545457642600980f, -0.920504853452440370f, 
  -0.927183854566787420f, -0.933580426497201740f, -0.939692620785908430f, 
  -0.945518575599316850f, -0.951056516295153640f, 
  -0.956304755963035550f, -0.961261695938318890f, -0.965925826289068310f, 
  -0.970295726275996470f, -0.974370064785235250f, -0.978147600733805690f, 
  -0.981627183447663980f, -0.984807753012208020f, 
  -0.987688340595137660f, -0.990268068741570360f, -0.992546151641322090f, 
  -0.994521895368273400f, -0.996194698091745550f, -0.997564050259824200f, 
  -0.998629534754573830f, -0.999390827019095760f, 
  -0.999847695156391270f, -1.000000000000000000f, -0.999847695156391270f, 
  -0.999390827019095760f, -0.998629534754573830f, -0.997564050259824200f, 
  -0.996194698091745550f, -0.994521895368273290f, 
  -0.992546151641321980f, -0.990268068741570250f, -0.987688340595137770f, 
  -0.984807753012208020f, -0.981627183447663980f, -0.978147600733805580f, 
  -0.974370064785235250f, -0.970295726275996470f, 
  -0.965925826289068310f, -0.961261695938318890f, -0.956304755963035440f, 
  -0.951056516295153530f, -0.945518575599316740f, -0.939692620785908320f, 
  -0.933580426497201740f, -0.927183854566787420f, 
  -0.920504853452440260f, -0.913545457642600870f, -0.906307787036649940f, 
  -0.898794046299167040f, -0.891006524188367790f, -0.882947592858926880f, 
  -0.874619707139395740f, -0.866025403784438600f, 
  -0.857167300702112220f, -0.848048096156426070f, -0.838670567945423940f, 
  -0.829037572555041740f, -0.819152044288991800f, -0.809016994374947450f, 
  -0.798635510047292830f, -0.788010753606722010f, 
  -0.777145961456970790f, -0.766044443118978010f, -0.754709580222772010f, 
  -0.743144825477394240f, -0.731353701619170460f, -0.719339800338651080f, 
  -0.707106781186547460f, -0.694658370458997250f, 
  -0.681998360062498480f, -0.669130606358858240f, -0.656059028990507160f, 
  -0.642787609686539250f, -0.629320391049837390f, -0.615661475325658180f, 
  -0.601815023152048270f, -0.587785252292473140f, 
  -0.573576436351046050f, -0.559192903470746900f, -0.544639035015027080f, 
  -0.529919264233204900f, -0.515038074910054160f, -0.499999999999999940f, 
  -0.484809620246337060f, -0.469471562785890810f, 
  -0.453990499739546750f, -0.438371146789077400f, -0.422618261740699440f, 
  -0.406736643075800150f, -0.390731128489273720f, -0.374606593415912010f, 
  -0.358367949545300270f, -0.342020143325668710f, 
  -0.325568154457156640f, -0.309016994374947400f, -0.292371704722736770f, 
  -0.275637355816999160f, -0.258819045102520740f, -0.241921895599667730f, 
  -0.224951054343865000f, -0.207911690817759310f, 
  -0.190808995376544800f, -0.173648177666930330f, -0.156434465040230870f, 
  -0.139173100960065440f, -0.121869343405147480f, -0.104528463267653460f, 
  -0.087155742747658166f, -0.069756473744125302f, 
  -0.052335956242943828f, -0.034899496702500969f, -0.017452406437283512f, 
  0.000000000000000000f, 0.017452406437283512f, 0.034899496702500969f, 
  0.052335956242943828f, 0.069756473744125302f, 
  0.087155742747658166f, 0.104528463267653460f, 0.121869343405147480f, 
  0.139173100960065440f, 0.156434465040230870f, 0.173648177666930330f, 
  0.190808995376544800f, 0.207911690817759310f, 
  0.224951054343865000f, 0.241921895599667730f, 0.258819045102520740f, 
  0.275637355816999160f, 0.292371704722736770f, 0.309016994374947400f, 
  0.325568154457156640f, 0.342020143325668710f, 
  0.358367949545300270f, 0.374606593415912010f, 0.390731128489273720f, 
  0.406736643075800150f, 0.422618261740699440f, 0.438371146789077400f, 
  0.453990499739546750f, 0.469471562785890810f, 
  0.484809620246337060f, 0.499999999999999940f, 0.515038074910054160f, 
  0.529919264233204900f, 0.544639035015027080f, 0.559192903470746900f, 
  0.573576436351046050f, 0.587785252292473140f, 
  0.601815023152048270f, 0.615661475325658180f, 0.629320391049837390f, 
  0.642787609686539250f, 0.656059028990507160f, 0.669130606358858240f, 
  0.681998360062498480f, 0.694658370458997250f, 
  0.707106781186547460f, 0.719339800338651080f, 0.731353701619170460f, 
  0.743144825477394240f, 0.754709580222772010f, 0.766044443118978010f, 
  0.777145961456970790f, 0.788010753606722010f, 
  0.798635510047292830f, 0.809016994374947450f, 0.819152044288991800f, 
  0.829037572555041740f, 0.838670567945423940f, 0.848048096156426070f, 
  0.857167300702112220f, 0.866025403784438600f, 
  0.874619707139395740f, 0.882947592858926880f, 0.891006524188367790f, 
  0.898794046299167040f, 0.906307787036649940f, 0.913545457642600870f, 
  0.920504853452440260f, 0.927183854566787420f, 
  0.933580426497201740f, 0.939692620785908320f, 0.945518575599316740f, 
  0.951056516295153530f, 0.956304755963035440f, 0.961261695938318890f, 
  0.965925826289068310f, 0.970295726275996470f, 
  0.974370064785235250f, 0.978147600733805580f, 0.981627183447663980f, 
  0.984807753012208020f, 0.987688340595137770f, 0.990268068741570250f, 
  0.992546151641321980f, 0.994521895368273290f, 
  0.996194698091745550f, 0.997564050259824200f, 0.998629534754573830f, 
  0.999390827019095760f, 0.999847695156391270f, 1.000000000000000000f, 
  0.999847695156391270f, 0.999390827019095760f, 
  0.998629534754573830f, 0.997564050259824200f, 0.996194698091745550f, 
  0.994521895368273400f, 0.992546151641322090f, 0.990268068741570360f, 
  0.987688340595137660f, 0.984807753012208020f, 
  0.981627183447663980f, 0.978147600733805690f, 0.974370064785235250f, 
  0.970295726275996470f, 0.965925826289068310f, 0.961261695938318890f, 
  0.956304755963035550f, 0.951056516295153640f, 
  0.945518575599316850f, 0.939692620785908430f, 0.933580426497201740f, 
  0.927183854566787420f, 0.920504853452440370f, 0.913545457642600980f, 
  0.906307787036650050f, 0.898794046299166930f, 
  0.891006524188367900f, 0.882947592858927100f, 0.874619707139395850f, 
  0.866025403784438710f, 0.857167300702112330f, 0.848048096156426070f, 
  0.838670567945424050f, 0.829037572555041740f, 
  0.819152044288992020f, 0.809016994374947450f, 0.798635510047292720f, 
  0.788010753606722010f, 0.777145961456971010f, 0.766044443118978010f, 
  0.754709580222771790f, 0.743144825477394240f, 
  0.731353701619170570f, 0.719339800338651410f, 0.707106781186547570f, 
  0.694658370458997140f, 0.681998360062498590f, 0.669130606358858350f, 
  0.656059028990507280f, 0.642787609686539470f, 
  0.629320391049837720f, 0.615661475325658400f, 0.601815023152048160f, 
  0.587785252292473250f, 0.573576436351046380f, 0.559192903470746900f, 
  0.544639035015026860f, 0.529919264233204900f, 
  0.515038074910054380f, 0.499999999999999940f, 0.484809620246337170f, 
  0.469471562785891080f, 0.453990499739546860f, 0.438371146789077290f, 
  0.422618261740699500f, 0.406736643075800430f, 
  0.390731128489274160f, 0.374606593415912240f, 0.358367949545300210f, 
  0.342020143325668880f, 0.325568154457156980f, 0.309016994374947510f, 
  0.292371704722737050f, 0.275637355816999660f, 
  0.258819045102521020f, 0.241921895599667730f, 0.224951054343864780f, 
  0.207911690817759310f, 0.190808995376544970f, 0.173648177666930280f, 
  0.156434465040230980f, 0.139173100960065740f, 
  0.121869343405147550f, 0.104528463267653730f, 0.087155742747658638f, 
  0.069756473744125524f, 0.052335956242943807f, 0.034899496702500699f, 
  0.017452406437283439f, 0.000000000000000122f 
}; 
 
 
/**  
 * @brief  Floating-point sin_cos function. 
 * @param[in]  theta    input value in degrees  
 * @param[out] *pSinVal points to the processed sine output.  
 * @param[out] *pCosVal points to the processed cos output.  
 * @return none. 
 */ 
 
 
void arm_sin_cos_f32( 
  float32_t theta, 
  float32_t * pSinVal, 
  float32_t * pCosVal) 
{ 
  uint32_t i;                                    /* Index for reading nearwst output values */ 
  float32_t x1 = -179.0f;                        /* Initial input value */ 
  float32_t y0, y1;                              /* nearest output values */ 
  float32_t fract;                               /* fractional part of input */ 
 
  /* Calculation of fractional part */ 
  if(theta > 0.0f) 
  { 
    fract = theta - (float32_t) ((int32_t) theta); 
  } 
  else 
  { 
    fract = (theta - (float32_t) ((int32_t) theta)) + 1.0f; 
  } 
 
  /* index calculation for reading nearest output values */ 
  i = (uint32_t) (theta - x1); 
 
  /* reading nearest sine output values */ 
  y0 = sinTable[i]; 
  y1 = sinTable[i + 1u]; 
 
  /* Calculation of sine value */ 
  *pSinVal = y0 + (fract * (y1 - y0)); 
 
  /* reading nearest cosine output values */ 
  y0 = cosTable[i]; 
  y1 = cosTable[i + 1u]; 
 
  /* Calculation of cosine value */ 
  *pCosVal = y0 + (fract * (y1 - y0)); 
 
} 
 
/**  
 * @} end of SinCos group  
 */