Intel® oneAPI DPC++/C++ Compiler Developer Guide and Reference

Development Reference Guides

Contents

Conversions between Fvec and Ivec

  • Convert the lower double-precision floating-point value of
    A
     to a 32-bit integer with truncation: 
    
int F64vec2ToInt(F64vec42 A);
r := (int)A0;
  • Convert the four floating-point values of
    A
     to two the two least significant double-precision floating-point values: 
    
F64vec2 F32vec4ToF64vec2(F32vec4 A);
r0 := (double)A0;
r1 := (double)A1;
  • Convert the two double-precision floating-point values of
    A
     to two single-precision floating-point values: 
    
F32vec4 F64vec2ToF32vec4(F64vec2 A);
r0 := (float)A0;
r1 := (float)A1;
  • Convert the signed
    int
     in
    B
     to a double-precision floating-point value and pass the upper double-precision value from
    A
     through to the result: 
    
F64vec2 InttoF64vec2(F64vec2 A, int B);
r0 := (double)B;
r1 := A1;
  • Convert the lower floating-point value of
    A
     to a 32-bit integer with truncation: 
    
int F32vec4ToInt(F32vec4 A);
r := (int)A0;
  • Convert the two lower floating-point values of
    A
     to two 32-bit integer with truncation, returning the integers in packed form: 
    
Is32vec2 F32vec4ToIs32vec2 (F32vec4 A);
r0 := (int)A0;
r1 := (int)A1;
  • Convert the 32-bit integer value
    B
     to a floating-point value; the upper three floating-point values are passed through from
    A
    : 
    
F32vec4 IntToF32vec4(F32vec4 A, int B);
r0 := (float)B;
r1 := A1;
r2 := A2;
r3 := A3;
  • Convert the two 32-bit integer values in packed form in
    B
     to two floating-point values; the upper two floating-point values are passed through from
    A
    : 
    
F32vec4 Is32vec2ToF32vec4(F32vec4 A, Is32vec2 B);
r0 := (float)B0;
r1 := (float)B1;
r2 := A2;
r3 := A3;

Product and Performance Information

1

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