# Intrinsics for Division Operations (512-bit)

The prototypes for Intel® Advanced Vector Extensions 512 (Intel® AVX-512) intrinsics are located in the zmmintrin.h header file.
To use these intrinsics, include the immintrin.h file as follows:

    #include <immintrin.h>

Intrinsic Name | Operation | Corresponding Intel® AVX-512 Instruction
--- | --- | ---
`_mm512_div_pd`, `_mm512_mask_div_pd`, `_mm512_maskz_div_pd` `_mm512_div_round_pd`, `_mm512_mask_div_round_pd`, `_mm512_maskz_div_round_pd` | Calculates quotient of rounded division operation of packed float64 elements. | `VDIVPD`
`_mm512_div_ps`, `_mm512_mask_div_ps`, `_mm512_maskz_div_ps` `_mm512_div_round_ps`, `_mm512_mask_div_round_ps`, `_mm512_maskz_div_round_ps` | Calculates quotient of rounded division operation of packed float32 elements. | `VDIVPS`
`_mm_mask_div_sd`, `_mm_maskz_div_sd` `_mm_div_round_sd`, `_mm_mask_div_round_sd`, `_mm_maskz_div_round_sd` | Calculates quotient of rounded division operation of scalar float64 elements. | `VDIVSD`
`_mm_mask_div_ss`, `_mm_maskz_div_ss` `_mm_div_round_ss`, `_mm_mask_div_round_ss`, `_mm_maskz_div_round_ss` | Calculates quotient of rounded division operation of scalar float32 elements. | `VDIVSS`

variable | definition
--- | ---
k | writemask used as a selector
a | first source vector element
b | second source vector element
src | source element to use based on writemask result
round | Rounding control values; these can be one of the following (along with the `sae` suppress all exceptions flag): `_MM_FROUND_TO_NEAREST_INT` - rounds to nearest even `_MM_FROUND_TO_NEG_INF` - rounds to negative infinity `_MM_FROUND_TO_POS_INF` - rounds to positive infinity `_MM_FROUND_TO_ZERO` - rounds to zero `_MM_FROUND_CUR_DIRECTION` - rounds using default from MXCSR register

_mm512_div_pd

    extern __m512d __cdecl _mm512_div_pd(__m512d a, __m512d b);

Divides packed float64 elements in a by packed elements in b, and stores the result.

_mm512_mask_div_pd

    extern __m512d __cdecl _mm512_mask_div_pd(__m512d src, __mmask8 k, __m512d a, __m512d b);

Divides packed float64 elements in a by packed elements in b, and stores the result using writemask k (elements are copied from src when the corresponding mask bit is not set).

_mm512_maskz_div_pd

    extern __m512d __cdecl _mm512_maskz_div_pd(__mmask8 k, __m512d a, __m512d b);

Divides packed float64 elements in a by packed elements in b, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

_mm512_div_round_pd

    extern __m512d __cdecl _mm512_div_round_pd(__m512d a, __m512d b, int round);

Divides packed float64 elements in a by packed elements in b, and stores the result.

_mm512_mask_div_round_pd

    extern __m512d __cdecl _mm512_mask_div_round_pd(__m512d src, __mmask8 k, __m512d a, __m512d b, int round);

Divides packed float64 elements in a by packed elements in b, and stores the result using writemask k (elements are copied from src when the corresponding mask bit is not set).

_mm512_maskz_div_round_pd

    extern __m512d __cdecl _mm512_maskz_div_round_pd(__mmask8 k, __m512d a, __m512d b, int round);

Divides packed float64 elements in a by packed elements in b, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

_mm512_div_ps

    extern __m512 __cdecl _mm512_div_ps(__m512 a, __m512 b);

Divides packed float32 elements in a by packed elements in b, and stores the result.

_mm512_mask_div_ps

    extern __m512 __cdecl _mm512_mask_div_ps(__m512 src, __mmask16 k, __m512 a, __m512 b);

Divides packed float32 elements in a by packed elements in b, and stores the result using writemask k (elements are copied from src when the corresponding mask bit is not set).

_mm512_maskz_div_ps

    extern __m512 __cdecl _mm512_maskz_div__ps(__mmask16 k, __m512 a, __m512 b);

Divides packed float32 elements in a by packed elements in b, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

_mm512_div_round_ps

    extern __m512 __cdecl _mm512_div_round_ps(__m512 a, __m512 b, int round);

Divides packed float32 elements in a by packed elements in b, and stores the result.

_mm512_mask_div_round_ps

    extern __m512 __cdecl _mm512_mask_div_round_ps(__m512 src, __mmask16 k, __m512 a, __m512 b, int round);

Divides packed float32 elements in a by packed elements in b, and stores the result using writemask k (elements are copied from src when the corresponding mask bit is not set).

_mm512_maskz_div_round_ps

    extern __m512 __cdecl _mm512_maskz_div_round_ps(__mmask16 k, __m512 a, __m512 b, int round);

Divides packed float32 elements in a by packed elements in b, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

_mm_mask_div_sd

    extern __m128d __cdecl _mm_mask_div_sd(__m128d src, __mmask8 k, __m128d a, __m128d b);

Divides lower float64 element in a by lower float64 element in b, stores the result in lower destination element using writemask k (the element is copied from src when mask bit 0 is not set), and copies upper element from a to upper destination element.

_mm_maskz_div_sd

    extern __m128d __cdecl _mm_maskz_div_sd(__mmask8 k, __m128d a, __m128d b);

Divides lower float64 element in a by lower float64 element in b, stores the result in lower destination element using zeromask k (the element is zeroed out when mask bit 0 is not set), and copies upper element from a to upper destination element.

_mm_div_round_sd

    extern __m128d __cdecl _mm_div_round_sd(__m128d a, __m128d b, int round);

Divides lower float64 element in a by lower float64 element in b, stores the result in lower destination element, and copies upper element from a to upper destination element.

_mm_mask_div_round_sd

    extern __m128d __cdecl _mm_mask_div_round_sd(__m128d src, __mmask8 k, __m128d a, __m128d b, int round);

Divides lower float64 element in a by lower float64 element in b, stores the result in lower destination element using writemask k (the element is copied from src when mask bit 0 is not set), and copies upper element from a to upper destination element.

_mm_maskz_div_round_sd

    extern __m128d __cdecl _mm_maskz_div_round_sd(__mmask8 k, __m128d a, __m128d b, int round);

Divides lower float64 element in a by lower float64 element in b, stores the result in lower destination element using zeromask k (the element is zeroed out when mask bit 0 is not set), and copies upper element from a to upper destination element.

_mm_div_round_ss

    extern __m128 __cdecl _mm_div_round_ss(__m128 a, __m128 b, int round);

Divides lower float32 element in a by lower float32 element in b, stores the result in lower destination element, and copies upper three packed elements from a to upper destination elements.

_mm_mask_div_round_ss

    extern __m128 __cdecl _mm_mask_div_round_ss(__m128 src, __mmask8 k, __m128 a, __m128 b, int round);

Divides lower float32 element in a by lower float32 element in b, stores the result in lower destination element using writemask k (the element is copied from src when mask bit 0 is not set), and copies upper three packed elements from a to upper destination elements.

_mm_maskz_div_round_ss

    extern __m128 __cdecl _mm_maskz_div_round_ss(__mmask8 k, __m128 a, __m128 b, int round);

Divides lower float32 element in a by lower float32 element in b, stores the result in lower destination element using zeromask k (the element is zeroed out when mask bit 0 is not set), and copies upper three packed elements from a to upper destination elements.

_mm_mask_div_ss

    extern __m128 __cdecl _mm_mask_div_ss(__m128 src, __mmask8 k, __m128 a, __m128 b);

Divides lower float32 element in a by lower float32 element in b, stores the result in lower destination element using writemask k (the element is copied from src when mask bit 0 is not set), and copies upper three packed elements from a to upper destination elements.

_mm_maskz_div_ss

    extern __m128 __cdecl _mm_maskz_div_ss(__mmask8 k, __m128 a, __m128 b);

Divides lower float32 element in a by lower float32 element in b, stores the result in lower destination element using zeromask k (the element is zeroed out when mask bit 0 is not set), and copies upper three packed elements from a to upper destination elements.

Parent topic: Intrinsics for Short Vector Math Library Operations (SVML)