_mm_cvtsi64x_ss
The latest version of this topic can be found at _mm_cvtsi64x_ss.
Microsoft Specific**
Generates the x64 extended version of the Convert 64-Bit Integer to Scalar Single-Precision Floating-Point Value (cvtsi2ss) instruction.
Syntax
__m128 _mm_cvtsi64x_ss(
__m128 a,
__int64 b
);
Parameters
[in] a
An __m128 structure containing four single-precision floating-point values.
[in] b
A 64-bit integer to be converted into a floating-point value.
Return Value
An __m128 structure whose first floating-point value is the result of the conversion. The other three values are copied unchanged from a.
Requirements
| Intrinsic | Architecture |
|---|---|
_mm_cvtsi64x_ss |
x64 |
Header file <intrin.h>
Remarks
The __m128 structure represents an XMM register, so this intrinsic allows the value b from system memory to be moved into an XMM register.
This routine is only available as an intrinsic.
Example
// _mm_cvtsi64x_ss.cpp
// processor: x64
#include <intrin.h>
#include <stdio.h>
#pragma intrinsic(_mm_cvtsi64x_ss)
int main()
{
__m128 a;
__int64 b = 54;
a.m128_f32[0] = 0;
a.m128_f32[1] = 0;
a.m128_f32[2] = 0;
a.m128_f32[3] = 0;
a = _mm_cvtsi64x_ss(a, b);
printf_s( "%lf %lf %lf %lf\n",
a.m128_f32[0], a.m128_f32[1],
a.m128_f32[2], a.m128_f32[3] );
}
54.000000 0.000000 0.000000 0.000000