The conversions operations are listed in the following table followed by a description of each intrinsic with the most recent mnemonic naming convention. The alternate name is provided in case you have used these intrinsics before.
| Intrinsic Name | Corresponding Instruction |
|---|---|
|
_mm_cvtss_si32 |
CVTSS2SI |
|
_mm_cvtps_pi32 |
CVTPS2PI |
|
_mm_cvttss_si32 |
CVTTSS2SI |
|
_mm_cvttps_pi32 |
CVTTPS2PI |
|
_mm_cvtsi32_ss |
CVTSI2SS |
|
_mm_cvtpi32_ps |
CVTTPS2PI |
|
_mm_cvtpi16_ps |
composite |
|
_mm_cvtpu16_ps |
composite |
|
_mm_cvtpi8_ps |
composite |
|
_mm_cvtpu8_ps |
composite |
|
_mm_cvtpi32x2_ps |
composite |
|
_mm_cvtps_pi16 |
composite |
|
_mm_cvtps_pi8 |
composite |
int _mm_cvtss_si32(__m128 a )
Convert the lower SP FP value of a to a 32-bit integer according to the current rounding mode.
r := (int)a0
__m64 _mm_cvtps_pi32(__m128 a )
Convert the two lower SP FP values of a to two 32-bit integers according to the current rounding mode, returning the integers in packed form.
r0 := (int)a0
r1 := (int)a1
int _mm_cvttss_si32(__m128 a )
Convert the lower SP FP value of a to a 32-bit integer with truncation.
r := (int)a0
__m64 _mm_cvttps_pi32(__m128 a )
Convert the two lower SP FP values of a to two 32-bit integer with truncation, returning the integers in packed form.
r0 := (int)a0
r1 := (int)a1
__m128 _mm_cvtsi32_ss(__m128 a, int b )
Convert the 32-bit integer value b to an SP FP value; the upper three SP FP values are passed through from a.
r0 := (float)b
r1 := a1 ; r2 := a2 ; r3 := a3
__m128 _mm_cvtpi32_ps(__m128 a, __m64 b )
Convert the two 32-bit integer values in packed form in b to two SP FP values; the upper two SP FP values are passed through from a.
r0 := (float)b0
r1 := (float)b1
r2 := a2
r3 := a3
__m128 _mm_cvtpi16_ps(__m64 a)
Convert the four 16-bit signed integer values in a to four single precision FP values.
r0 := (float)a0
r1 := (float)a1
r2 := (float)a2
r3 := (float)a3
__m128 _mm_cvtpu16_ps(__m64 a)
Convert the four 16-bit unsigned integer values in a to four single precision FP values.
r0 := (float)a0
r1 := (float)a1
r2 := (float)a2
r3 := (float)a3
__m128 _mm_cvtpi8_ps(__m64 a)
Convert the lower four 8-bit signed integer values in a to four single precision FP values.
r0 := (float)a0
r1 := (float)a1
r2 := (float)a2
r3 := (float)a3
__m128 _mm_cvtpu8_ps(__m64 a)
Convert the lower four 8-bit unsigned integer values in a to four single precision FP values.
r0 := (float)a0
r1 := (float)a1
r2 := (float)a2
r3 := (float)a3
__m128 _mm_cvtpi32x2_ps(__m64 a, __m64 b)
Convert the two 32-bit signed integer values in a and the two 32-bit signed integer values in b to four single precision FP values.
r0 := (float)a0
r1 := (float)a1
r2 := (float)b0
r3 := (float)b1
__m64 _mm_cvtps_pi16( __m128 a)
Convert the four single precision FP values in a to four signed 16-bit integer values.
r0 := (short)a0
r1 := (short)a1
r2 := (short)a2
r3 := (short)a3
__m64 _mm_cvtps_pi8( __m128 a)
Convert the four single precision FP values in a to the lower four signed 8-bit integer values of the result.
r0 := (char)a0
r1 := (char)a1
r2 := (char)a2
r3 := (char)a3