Intel® C++ Compiler Classic Developer Guide and Reference

ID 767249
Date 3/31/2023
Public

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Document Table of Contents

Constructors and Initialization

The following table shows how to create and initialize F32vec objects with the Fvec classes.

Constructors and Initialization for Fvec Classes

Example

Intrinsic

Returns

Constructor Declaration

F64vec2 A;
F32vec4 B;
F32vec1 C;

N/A

N/A

__m128 Object Initialization

F64vec2 A(__m128d mm);
F32vec4 B(__m128 mm);
F32vec1 C(__m128 mm);

N/A

N/A

Double Initialization

/* Initializes two doubles. */
F64vec2 A(double d0, double d1);
F64vec2 A = F64vec2(double d0, double d1);

_mm_set_pd

A0 := d0;
A1 := d1;

F64vec2 A(double d0);
/* Initializes both return values
with the same double precision value */.

_mm_set1_pd

A0 := d0;
A1 := d0;

Float Initialization

F32vec4 A(float f3, float f2,
float f1, float f0);

F32vec4 A = F32vec4(float f3, float f2,
float f1, float f0);

_mm_set_ps

A0 := f0;
A1 := f1;
A2 := f2;
A3 := f3;

F32vec4 A(float f0);
/* Initializes all return values
with the same floating point value. */

_mm_set1_ps

A0 := f0;
A1 := f0;
A2 := f0;
A3 := f0;

F32vec4 A(double d0);
/* Initialize all return values with
the same double-precision value. */

_mm_set1_ps(d)

A0 := d0;
A1 := d0;
A2 := d0;
A3 := d0;

F32vec1 A(double d0);
/* Initializes the lowest value of A
with d0 and the other values with 0.*/

_mm_set_ss(d)

A0 := d0;
A1 := 0;
A2 := 0;
A3 := 0;

F32vec1 B(float f0);
/* Initializes the lowest value of B
with f0 and the other values with 0.*/

_mm_set_ss

B0 := f0;
B1 := 0;
B2 := 0;
B3 := 0;

F32vec1 B(int I);
/* Initializes the lowest value of B
with f0, other values are undefined.*/

_mm_cvtsi32_ss

B0 := f0;
B1 := {}
B2 := {}
B3 := {}