The Intel® Streaming SIMD Extensions 2 (Intel® SSE2) intrinsics for floating-point arithmetic operations are listed in this topic. The prototypes for the SSE2 intrinsics are in the emmintrin.h header file.

The results of each intrinsic operation are placed in a register. The information about what is placed in each register appears in the tables below, in the detailed explanation for each intrinsic. For each intrinsic, the resulting register is represented by R0 and R1, where R0 and R1 each represent one piece of the result register.

Intrinsic Name |
Operation |
Corresponding |
---|---|---|

_mm_add_sd |
Addition |
ADDSD |

_mm_add_pd |
Addition |
ADDPD |

_mm_sub_sd |
Subtraction |
SUBSD |

_mm_sub_pd |
Subtraction |
SUBPD |

_mm_mul_sd |
Multiplication |
MULSD |

_mm_mul_pd |
Multiplication |
MULPD |

_mm_div_sd |
Division |
DIVSD |

_mm_div_pd |
Division |
DIVPD |

_mm_sqrt_sd |
Computes Square Root |
SQRTSD |

_mm_sqrt_pd |
Computes Square Root |
SQRTPD |

_mm_min_sd |
Computes Minimum |
MINSD |

_mm_min_pd |
Computes Minimum |
MINPD |

_mm_max_sd |
Computes Maximum |
MAXSD |

_mm_max_pd |
Computes Maximum |
MAXPD |

__m128d _mm_add_sd(__m128d a, __m128d b)

Adds the lower DP FP (double-precision, floating-point) values of a and b ; the upper DP FP value is passed through from a.

R0 |
R1 |
---|---|

a0 + b0 |
a1 |

R0 |
R1 |
---|---|

a0 + b0 |
a1 + b1 |

__m128d _mm_sub_sd(__m128d a, __m128d b)

Subtracts the lower DP FP value of b from a. The upper DP FP value is passed through from a.

R0 |
R1 |
---|---|

a0 - b0 |
a1 |

R0 |
R1 |
---|---|

a0 - b0 |
a1 - b1 |

__m128d _mm_mul_sd(__m128d a, __m128d b)

Multiplies the lower DP FP values of a and b. The upper DP FP is passed through from a.

R0 |
R1 |
---|---|

a0 * b0 |
a1 |

R0 |
R1 |
---|---|

a0 * b0 |
a1 * b1 |

__m128d _mm_div_sd(__m128d a, __m128d b)

Divides the lower DP FP values of a and b. The upper DP FP value is passed through from a.

R0 |
R1 |
---|---|

a0 / b0 |
a1 |

R0 |
R1 |
---|---|

a0 / b0 |
a1 / b1 |

__m128d _mm_sqrt_sd(__m128d a, __m128d b)

Computes the square root of the lower DP FP value of b. The upper DP FP value is passed through from a.

R0 |
R1 |
---|---|

sqrt(b0) |
a1 |

R0 |
R1 |
---|---|

sqrt(a0) |
sqrt(a1) |

__m128d _mm_min_sd(__m128d a, __m128d b)

Computes the minimum of the lower DP FP values of a and b. The upper DP FP value is passed through from a.

R0 |
R1 |
---|---|

min (a0, b0) |
a1 |

R0 |
R1 |
---|---|

min (a0, b0) |
min(a1, b1) |

__m128d _mm_max_sd(__m128d a, __m128d b)

Computes the maximum of the lower DP FP values of a and b. The upper DP FP value is passed through from a.

R0 |
R1 |
---|---|

max (a0, b0) |
a1 |

R0 |
R1 |
---|---|

max (a0, b0) |
max (a1, b1) |

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