ti_arm_trig.h

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 *  Copyright (C) 2022 Texas Instruments Incorporated
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#ifndef TI_ARM_TRIG_H_
#define TI_ARM_TRIG_H_
 
/* ========================================================================== */
/*                                 Macros                                     */
/* ========================================================================== */
 
#define TRIG_TEXT_SECTION   __attribute__((section(".trigText"))) __attribute__((always_inline)) //avoid function call overhead
#define TRIG_DATA_SECTION   __attribute__((aligned(8), section(".trigData")))
 
/* ========================================================================== */
/*                          Function Declarations                             */
/* ========================================================================== */
 
extern float ti_arm_sin(float angleRad);
 
extern float ti_arm_cos(float angleRad);
 
extern void ti_arm_sincos(float angleRad, float *retValues);
 
extern float ti_arm_asin(float x);
 
extern float ti_arm_acos(float x);
 
extern float ti_arm_atan(float x);
 
extern float ti_arm_atan2(float y, float x);
 
TRIG_TEXT_SECTION static inline float ti_arm_sqrt(float x);
 
TRIG_TEXT_SECTION static inline float ti_arm_abs(float x);
 
/* ========================================================================== */
/*                       Static Function Definitions                          */
/* ========================================================================== */
 
TRIG_TEXT_SECTION static inline float ti_arm_sqrt(float x)
{
    float r = 0;
    __asm ("VSQRT.F32 %0, %1" : "=t" (r) : "t" (x));
    return r;
}
 
TRIG_TEXT_SECTION static inline float ti_arm_abs(float x)
{
    float r = 0;
    __asm ("VABS.F32 %0, %1" : "=t" (r) : "t" (x));
    return r;
}
 
#endif /* TI_ARM_TRIG_H */