# Intrinsics for FP Subtraction Operations

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_sub_pd`, `_mm512_mask_sub_pd`, `_mm512_maskz_sub_pd` `_mm512_sub_round_pd`, `_mm512_mask_sub_round_pd`, `_mm512_maskz_sub_round_pd` | Subtracts float64 vectors. | `VSUBPD`
`_mm512_sub_ps`, `_mm512_mask_sub_ps`, `_mm512_maskz_sub_ps` `_mm512_sub_round_ps`, `_mm512_mask_sub_round_ps`, `_mm512_maskz_sub_round_ps` | Subtracts float32 vectors. | `VSUBPS`
`_mm_mask_sub_sd`, `_mm_maskz_sub_sd` `_mm_sub_round_sd`, `_mm_mask_sub_round_sd`, `_mm_maskz_sub_round_sd` | Subtracts float64 vectors. | `VSUBSD`
`_mm_mask_sub_ss`, `_mm_maskz_sub_ss` `_mm_sub_round_ss`, `_mm_mask_sub_round_ss`, `_mm_maskz_sub_round_ss` | Subtracts float32 vectors. | `VSUBSS`

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_sub_pd

    extern __m512d __cdecl _mm512_sub_pd(__m512d a, __m512d b);

Subtracts packed float64 elements in vector b from vector a, and stores the result.

_mm512_mask_sub_pd

    extern __m512d __cdecl _mm512_mask_sub_pd(__m512d src, __mmask8 k, __m512d a, __m512d b);

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

_mm512_maskz_sub_pd

    extern __m512d __cdecl _mm512_maskz_sub_pd(__mmask8 k, __m512d a, __m512d b);

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

_mm512_sub_round_pd

    extern __m512d __cdecl _mm512_sub_round_pd(__m512d a, __m512d b, int round);

Subtracts packed float64 elements in b from packed float64 elements in ausing rounding control round, and stores the result.

_mm512_mask_sub_round_pd

    extern __m512d __cdecl _mm512_mask_sub_round_pd(__m512d src, __mmask8 k, __m512d a, __m512d b, int round);

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

_mm512_maskz_sub_round_pd

    extern __m512d __cdecl _mm512_maskz_sub_round_pd(__mmask8 k, __m512d a, __m512d b, int round);

Subtracts packed float64 elements in b from packed float64 elements in a using rounding control round, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

_mm512_sub_ps

    extern __m512 __cdecl _mm512_sub_ps(__m512 a, __m512 b);

Subtracts packed float32 elements in b from packed float32 elements in a, and stores the result.

_mm512_mask_sub_ps

    extern __m512 __cdecl _mm512_mask_sub_ps(__m512 src, __mmask16 k, __m512 a, __m512 b);

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

_mm512_maskz_sub_ps

    extern __m512 __cdecl _mm512_maskz_sub_ps(__mmask16 k, __m512 a, __m512 b);

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

_mm512_sub_round_ps

    extern __m512 __cdecl _mm512_sub_round_ps(__m512 a, __m512 b, int round);

Subtracts packed float32 elements in b from packed float32 elements in a, and stores the result.

_mm512_mask_sub_round_ps

    extern __m512 __cdecl _mm512_mask_sub_round_ps(__m512 src, __mmask16 k, __m512 a, __m512 b, int round);

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

_mm512_maskz_sub_round_ps

    extern __m512 __cdecl _mm512_maskz_sub_round_ps(__mmask16 k, __m512 a, __m512 b, int round);

Subtracts packed float32 elements in b from packed float32 elements in a using rounding control round, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

_mm_mask_sub_sd

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

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

_mm_maskz_sub_sd

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

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

_mm_sub_round_sd

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

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

_mm_mask_sub_round_sd

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

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

_mm_maskz_sub_round_sd

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

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

_mm_sub_round_ss

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

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

_mm_mask_sub_round_ss

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

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

_mm_maskz_sub_round_ss

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

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

_mm_mask_sub_ss

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

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

_mm_maskz_sub_ss

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

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

_mm_sub_round_ss

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

Subtracts the lower float32 element in b from the lower float32 element in a, stores the result in the lower destination element, and copy the upper three packed elements from a to the upper destination elements.

_mm_mask_sub_round_ss

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

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

_mm_maskz_sub_round_ss

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

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

Parent topic: Intrinsics for Subtraction Operations