Max 5 API Reference

z_altivec.h

#ifdef __ALTIVEC__
#pragma altivec_model on

#ifdef __cplusplus
#include <stdlib.h>     // for vec_malloc
#endif

#define SIXTEENIZE(p) ((((unsigned long)(p)) + 16) & 0xFFFFFFF0L);

typedef union 
{
    float           flt[4];
    vector float    vFlt;
} floatToVector;

static floatToVector __vsf_temp;

// this is what was needed to convince the compiler to copy a float to
// the four float locations in a vector

#define vec_splat_float(v,f) {                          \
    __vsf_temp.flt[0] = f;                              \
    v = vec_splat( vec_lde( 0, __vsf_temp.flt ), 0 );   }

#define VRSAVE     asm { li r0,-1 ; mtspr vrsave,r0 }
    
#pragma altivec_model off
#endif

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