Constant Name | Description |
---|---|

MAXFLOAT | Value of maximum non-infinite single-precision floating-point number. |

HUGE_VALF | A positive float constant expression. HUGE_VALF evaluates to +infinity. Used as an error value returned by the built-in math functions. |

HUGE_VAL | A positive double expression that evaluates to + infinity. Used as an error value returned by the built-in math functions. (Available if the built-in math functions are extended with cl_khr_fp64.) |

INFINITY | A constant expression of type float representing positive or unsigned infinity. |

NAN | A constant expression of type float representing a quiet NaN. |

The following constants are also available. They are of type float and are accurate within the precision of the float type.

Constant Name | Description |
---|---|

M_E_F | Value of e |

M_LOG2E_F | Value of log_{2}e |

M_LOG10E_F | Value of log_{10}e |

M_LN2_F | Value of log_{e}2 |

M_LN10_F | Value of log_{e}10 |

M_PI_F | Value of pi |

M_PI_2_F | Value of pi / 2 |

M_PI_4_F | Value of pi / 4 |

M_1_PI_F | Value of 1 / pi |

M_2_PI_F | Value of 2 / pi |

M_2_SQRTPI_F | Value of 2 / (square root of pi) |

M_SQRT2_F | Value of square root of 2 |

M_SQRT1_2_F | Value of 1 / (square root of 2) |

The following constants are available if the built-in math functions are extended with cl_khr_fp64. They are of type double and are accurate within the precision of the double type.

Constant Name | Description |
---|---|

M_E | Value of e |

M_LOG2E | Value of log_{2}e |

M_LOG10E | Value of log_{10}e |

M_LN2 | Value of log_{e}2 |

M_LN10 | Value of log_{e}10 |

M_PI | Value of pi |

M_PI_2 | Value of pi / 2 |

M_PI_4 | Value of pi / 4 |

M_1_PI | Value of 1 / pi |

M_2_PI | Value of 2 / pi |

M_2_SQRTPI | Value of 2 / (square root of pi) |

M_SQRT2 | Value of square root of 2 |

M_SQRT1_2 | Value of 1 / (square root of 2) |

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