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The C library provides functions to do basic operations on floating-point numbers. These include absolute value, maximum and minimum, normalization, bit twiddling, rounding, and a few others.

• Absolute Value | Absolute values of integers and floats. | |

• Normalization Functions | Extracting exponents and putting them back. | |

• Rounding Functions | Rounding floats to integers. | |

• Remainder Functions | Remainders on division, precisely defined. | |

• FP Bit Twiddling | Sign bit adjustment. Adding epsilon. | |

• FP Comparison Functions | Comparisons without risk of exceptions. | |

• Misc FP Arithmetic | Max, min, positive difference, multiply-add. |