DSP2812浮点运算库.doc

//########################################################################### // // FILE: IQmathLib.h // // TITLE: IQ Math library functions definitions. // //########################################################################### // // Ver | dd-mmm-yyyy | Who | Description of changes // =====|=============|=======|============================================== // 1.3 | 19 Nov 2001 | A. T. | Original Release. // -----|-------------|-------|---------------------------------------------- // 1.4 | 17 May 2002 | A. T. | Added new functions and support for // | | | intrinsics IQmpy, IQxmpy, IQsat. // -----|-------------|-------|---------------------------------------------- // 1.4a| 12 Jun 2002 | A. T. | Fixed problem with _IQ() operation on // | | | variables. // -----|-------------|-------|---------------------------------------------- // 1.4b| 18 Jun 2002 | A. T. | Fixed bug with _IQtoIQN() and _IQNtoIQ() // | | | operations. // -----|-------------|-------|---------------------------------------------- // 1.4d| 30 Mar 2003 | DA/SD | 1. Added macro parameters in parentheses // | | | in number of places where it matters // | | | 2. Added macro definition to include header // | | | file multiple times in the program. // -----|-------------|-------|---------------------------------------------- // //########################################################################### // // User needs to configure MATH_TYPE and GLOBAL_Q values: // //--------------------------------------------------------------------------- // Select math type, IQ_MATH or FLOAT_MATH: // #ifndef __IQMATHLIB_H_INCLUDED__ #define __IQMATHLIB_H_INCLUDED__ #define FLOAT_MATH 1 #define IQ_MATH 0 #ifndef MATH_TYPE #define MATH_TYPE IQ_MATH #endif //--------------------------------------------------------------------------