Class X86.Fma

FMA intrinsics

Inheritance
Object
X86.Fma
Inherited Members
Object.Equals(Object)
Object.Equals(Object, Object)
Object.GetHashCode()
Object.GetType()
Object.MemberwiseClone()
Namespace: Unity.Burst.Intrinsics
Syntax
public static class Fma

Properties

IsFmaSupported

Evaluates to true at compile time if FMA intrinsics are supported.

Burst ties FMA support to AVX2 support to simplify feature sets to support.

Declaration
public static bool IsFmaSupported { get; }
Property Value
Type Description
Boolean

Methods

fmadd_pd(v128, v128, v128)

Multiply packed double-precision (64-bit) floating-point elements in a and b, add the intermediate result to packed elements in c, and store the results in dst.

Declaration
public static v128 fmadd_pd(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmadd213pd xmm, xmm, xmm

fmadd_ps(v128, v128, v128)

Multiply packed single-precision (32-bit) floating-point elements in a and b, add the intermediate result to packed elements in c, and store the results in dst.

Declaration
public static v128 fmadd_ps(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmadd213ps xmm, xmm, xmm

fmadd_sd(v128, v128, v128)

Multiply the lower double-precision (64-bit) floating-point elements in a and b, and add the intermediate result to the lower element in c. Store the result in the lower element of dst, and copy the upper element from a to the upper element of dst.

Declaration
public static v128 fmadd_sd(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmadd213sd xmm, xmm, xmm

fmadd_ss(v128, v128, v128)

Multiply the lower single-precision (32-bit) floating-point elements in a and b, and add the intermediate result to the lower element in c. Store the result in the lower element of dst, and copy the upper 3 packed elements from a to the upper elements of dst.

Declaration
public static v128 fmadd_ss(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmadd213ss xmm, xmm, xmm

fmaddsub_pd(v128, v128, v128)

Multiply packed double-precision (64-bit) floating-point elements in a and b, alternatively add and subtract packed elements in c to/from the intermediate result, and store the results in dst.

Declaration
public static v128 fmaddsub_pd(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmaddsub213pd xmm, xmm, xmm

fmaddsub_ps(v128, v128, v128)

Multiply packed single-precision (32-bit) floating-point elements in a and b, alternatively add and subtract packed elements in c to/from the intermediate result, and store the results in dst.

Declaration
public static v128 fmaddsub_ps(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmaddsub213ps xmm, xmm, xmm

fmsub_pd(v128, v128, v128)

Multiply packed double-precision (64-bit) floating-point elements in a and b, subtract packed elements in c from the intermediate result, and store the results in dst.

Declaration
public static v128 fmsub_pd(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmsub213pd xmm, xmm, xmm

fmsub_ps(v128, v128, v128)

Multiply packed single-precision (32-bit) floating-point elements in a and b, subtract packed elements in c from the intermediate result, and store the results in dst.

Declaration
public static v128 fmsub_ps(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmsub213ps xmm, xmm, xmm

fmsub_sd(v128, v128, v128)

Multiply the lower double-precision(64-bit) floating-point elements in a and b, and subtract the lower element in c from the intermediate result.Store the result in the lower element of dst, and copy the upper element from a to the upper element of dst.

Declaration
public static v128 fmsub_sd(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmsub213sd xmm, xmm, xmm

fmsub_ss(v128, v128, v128)

Multiply the lower single-precision (32-bit) floating-point elements in a and b, and subtract the lower element in c from the intermediate result. Store the result in the lower element of dst, and copy the upper 3 packed elements from a to the upper elements of dst.

Declaration
public static v128 fmsub_ss(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmsub213ss xmm, xmm, xmm

fmsubadd_pd(v128, v128, v128)

Multiply packed double-precision (64-bit) floating-point elements in a and b, alternatively subtract and add packed elements in c to/from the intermediate result, and store the results in dst.

Declaration
public static v128 fmsubadd_pd(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmsubadd213pd xmm, xmm, xmm

fmsubadd_ps(v128, v128, v128)

Multiply packed single-precision (32-bit) floating-point elements in a and b, alternatively subtract and add packed elements in c to/from the intermediate result, and store the results in dst.

Declaration
public static v128 fmsubadd_ps(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfmsubadd213ps xmm, xmm, xmm

fnmadd_pd(v128, v128, v128)

Multiply packed double-precision (64-bit) floating-point elements in a and b, add the negated intermediate result to packed elements in c, and store the results in dst.

Declaration
public static v128 fnmadd_pd(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfnmadd213pd xmm, xmm, xmm

fnmadd_ps(v128, v128, v128)

Multiply packed single-precision (32-bit) floating-point elements in a and b, add the negated intermediate result to packed elements in c, and store the results in dst.

Declaration
public static v128 fnmadd_ps(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfnmadd213ps xmm, xmm, xmm

fnmadd_sd(v128, v128, v128)

Multiply the lower double-precision (64-bit) floating-point elements in a and b, and add the negated intermediate result to the lower element in c. Store the result in the lower element of dst, and copy the upper element from a to the upper element of dst.

Declaration
public static v128 fnmadd_sd(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfnmadd213sd xmm, xmm, xmm

fnmadd_ss(v128, v128, v128)

Multiply the lower single-precision (32-bit) floating-point elements in a and b, and add the negated intermediate result to the lower element in c. Store the result in the lower element of dst, and copy the upper 3 packed elements from a to the upper elements of dst.

Declaration
public static v128 fnmadd_ss(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfnmadd213ss xmm, xmm, xmm

fnmsub_pd(v128, v128, v128)

Multiply packed double-precision (64-bit) floating-point elements in a and b, subtract packed elements in c from the negated intermediate result, and store the results in dst.

Declaration
public static v128 fnmsub_pd(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfnmsub213pd xmm, xmm, xmm

fnmsub_ps(v128, v128, v128)

Multiply packed single-precision (32-bit) floating-point elements in a and b, subtract packed elements in c from the negated intermediate result, and store the results in dst.

Declaration
public static v128 fnmsub_ps(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfnmsub213ps xmm, xmm, xmm

fnmsub_sd(v128, v128, v128)

Multiply the lower double-precision(64-bit) floating-point elements in a and b, and subtract the lower element in c from the negated intermediate result.Store the result in the lower element of dst, and copy the upper element from a to the upper element of dst.

Declaration
public static v128 fnmsub_sd(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfnmsub213sd xmm, xmm, xmm

fnmsub_ss(v128, v128, v128)

Multiply the lower single-precision (32-bit) floating-point elements in a and b, and subtract the lower element in c from the negated intermediate result. Store the result in the lower element of dst, and copy the upper 3 packed elements from a to the upper elements of dst.

Declaration
public static v128 fnmsub_ss(v128 a, v128 b, v128 c)
Parameters
Type Name Description
v128 a
v128 b
v128 c
Returns
Type Description
v128
Remarks

**** vfnmsub213ss xmm, xmm, xmm

mm256_fmadd_pd(v256, v256, v256)

Multiply packed double-precision (64-bit) floating-point elements in a and b, add the intermediate result to packed elements in c, and store the results in dst.

Declaration
public static v256 mm256_fmadd_pd(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfmadd213pd ymm, ymm, ymm

mm256_fmadd_ps(v256, v256, v256)

Multiply packed single-precision (32-bit) floating-point elements in a and b, add the intermediate result to packed elements in c, and store the results in dst.

Declaration
public static v256 mm256_fmadd_ps(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfmadd213ps ymm, ymm, ymm

mm256_fmaddsub_pd(v256, v256, v256)

Multiply packed double-precision (64-bit) floating-point elements in a and b, alternatively add and subtract packed elements in c to/from the intermediate result, and store the results in dst.

Declaration
public static v256 mm256_fmaddsub_pd(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfmaddsub213pd ymm, ymm, ymm

mm256_fmaddsub_ps(v256, v256, v256)

Multiply packed single-precision (32-bit) floating-point elements in a and b, alternatively add and subtract packed elements in c to/from the intermediate result, and store the results in dst.

Declaration
public static v256 mm256_fmaddsub_ps(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfmaddsub213ps ymm, ymm, ymm

mm256_fmsub_pd(v256, v256, v256)

Multiply packed double-precision (64-bit) floating-point elements in a and b, subtract packed elements in c from the intermediate result, and store the results in dst.

Declaration
public static v256 mm256_fmsub_pd(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfmsub213pd ymm, ymm, ymm

mm256_fmsub_ps(v256, v256, v256)

Multiply packed single-precision (32-bit) floating-point elements in a and b, subtract packed elements in c from the intermediate result, and store the results in dst.

Declaration
public static v256 mm256_fmsub_ps(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfmsub213ps ymm, ymm, ymm

mm256_fmsubadd_pd(v256, v256, v256)

Multiply packed double-precision (64-bit) floating-point elements in a and b, alternatively subtract and add packed elements in c to/from the intermediate result, and store the results in dst.

Declaration
public static v256 mm256_fmsubadd_pd(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfmsubadd213pd ymm, ymm, ymm

mm256_fmsubadd_ps(v256, v256, v256)

Multiply packed single-precision (32-bit) floating-point elements in a and b, alternatively subtract and add packed elements in c to/from the intermediate result, and store the results in dst.

Declaration
public static v256 mm256_fmsubadd_ps(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfmsubadd213ps ymm, ymm, ymm

mm256_fnmadd_pd(v256, v256, v256)

Multiply packed double-precision (64-bit) floating-point elements in a and b, add the negated intermediate result to packed elements in c, and store the results in dst.

Declaration
public static v256 mm256_fnmadd_pd(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfnmadd213pd ymm, ymm, ymm

mm256_fnmadd_ps(v256, v256, v256)

Multiply packed single-precision (32-bit) floating-point elements in a and b, add the negated intermediate result to packed elements in c, and store the results in dst.

Declaration
public static v256 mm256_fnmadd_ps(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfnmadd213ps ymm, ymm, ymm

mm256_fnmsub_pd(v256, v256, v256)

Multiply packed double-precision (64-bit) floating-point elements in a and b, subtract packed elements in c from the negated intermediate result, and store the results in dst.

Declaration
public static v256 mm256_fnmsub_pd(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfnmsub213pd ymm, ymm, ymm

mm256_fnmsub_ps(v256, v256, v256)

Multiply packed single-precision (32-bit) floating-point elements in a and b, subtract packed elements in c from the negated intermediate result, and store the results in dst.

Declaration
public static v256 mm256_fnmsub_ps(v256 a, v256 b, v256 c)
Parameters
Type Name Description
v256 a
v256 b
v256 c
Returns
Type Description
v256
Remarks

**** vfnmsub213ps ymm, ymm, ymm

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