_mm_cvt_ss2si
Microsoft Specific
Generates the Convert Single-Precision Floating-Point Value to Doubleword Integer (cvtss2si) instruction.
int _mm_cvt_ss2si(
__m128 value
);
Parameters
- [in] value
An __m128 structure containing four single-precision floating-point values.
Return Value
An integer representing the result of the conversion.
Requirements
Intrinsic |
Architecture |
|---|---|
_mm_cvt_ss2si |
x86 with SSE, x64 |
Header file <intrin.h>
Remarks
The integer is rounded according to the rounding control bits in MXCSR. The default rounding mode is round-to-nearest, rounding to the even number if the decimal part is 0.5. If an overflow occurs, 0x80000000 is returned. The __m128 structure represents an XMM register, so this intrinsic allows a value from the XMM register to be moved into system memory.
This routine is only available as an intrinsic.
Example
// _mm_cvt_ss2si.cpp
// processor: x86, x64
#include <intrin.h>
#include <stdio.h>
#pragma intrinsic(_mm_cvt_ss2si)
int main()
{
__m128 a;
int b;
float af[4] = { 101.25, 200.75,300.5, 400.5 };
// Load a with the floating point values.
// The values will be copied to the XMM registers.
a = _mm_loadu_ps(af);
// Extract the first element of a
b = _mm_cvt_ss2si(a);
printf_s("%d\n", b );
}
101