3DNow! Intrinsics
Microsoft Specific
This topic contains the 3DNow! intrinsics. For each intrinsic, the header file mm3dnow.h is required.
The following table lists the 3DNow! intrinsics alphabetically.
Intrinsic |
Use |
|---|---|
Clears the architectural state when switching between MMX and floating-point instructions. |
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Returns a 64-bit MMX value where the lower half is set to the floating-point, single-precision value from the source operand and the upper half is zero. There is no error return. |
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Calculates the rounded averages of eight unsigned 8-bit integer values. |
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Converts packed floating-point, single-precision values to packed 32-bit integer values. |
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Converts packed floating-point, single-precision values to packed 16-bit signed integer values using truncation. |
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Performs packed floating-point, single-precision accumulation. |
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Performs packed floating-point, single-precision addition. |
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Compares packed floating-point, single-precision values to be equal and sets the corresponding return value to ones or zeros based on the result of the comparison. |
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Compares the first packed floating-point, single-precision value to be greater than or equal to the second one and sets the corresponding return value to ones or zeros based on the result of the comparison. |
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Compares the first packed floating-point, single-precision value to be greater than the second one and sets the corresponding return value to ones or zeros based on the result of the comparison. |
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Returns the larger of the two packed floating-point, single-precision values. |
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Returns the smaller of the two packed floating-point, single-precision values. |
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Performs packed floating-point, single-precision multiplication. |
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Performs packed floating-point, single-precision negative accumulation. |
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Performs packed floating-point, single-precision positive-negative accumulation. |
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Performs scalar floating-point, low-precision reciprocal approximation. |
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Performs the first intermediate step in the Newton-Raphson iteration to refine the reciprocal approximation produced by the _m_pfrcp intrinsic function. |
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Performs the second and final step in the Newton-Raphson iteration to refine the reciprocal or reciprocal square root approximation produced by the _m_pfrcp or _m_pfsqrt intrinsic functions, respectively. |
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Performs the first intermediate step in the Newton-Raphson iteration to refine the reciprocal square root approximation produced by _m_pfsqrt intrinsic function. |
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Performs scalar floating-point, low-precision reciprocal square root approximation. |
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Performs packed floating-point, single-precision subtraction. |
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Performs packed floating-point, single-precision reverse subtraction. |
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Converts packed 32-bit integer values to packed floating-point, single-precision values. |
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Converts packed 16-bit signed integer values to packed floating-point, single-precision values. |
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Multiplies four signed 16-bit integer values in the source operand by four signed 16-bit integer values in the destination operand. |
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Loads a 32-byte cache line into L1 data cache and sets the cache line state to exclusive. |
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Loads a 32-byte cache line into L1 data cache and sets the cache line state to modified. |
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Swaps upper and lower halves of the source operand. |
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Returns the floating-point, single-precision value from the lower half of the 64-bit MMX value in the source operand. There is no error return. The compiler correctly ensures that an implict FEMMS is issued before any attempt to use the result of _m_to_float( ) operation. |