CrossWorks for ARM User Guide

Remainder functionsfmodfmodfmodfmodffCompute remainder after division of two doublesCompute remainder after division of two floatsBreak a double to integer and fractional partsBreak a float to integer and fractional partsMaximum, minimum, and positive difference functionsfmaxfmaxffminfminfCompute maximum of two doublesCompute maximum of two floatsCompute minimum of two doublesCompute minimum of two floatsNearest integer functionsceilceilffloorfloorfCompute smallest integer not greater than a doubleCompute smallest integer not greater than a floatCompute largest integer not greater than a doubleCompute largest integer not greater than a floatacosSynopsisDescriptionFast math librarybehaviorIEC 60559 mathlibrary behaviorPortability#include double acos(double x);acos returns the principal value, in radians, of the inverse circular cosine of x. Theprincipal value lies in the interval [0, PI] radians.If |x| > 1, errno is set to EDOM and acos returns HUGE_VAL.If x is NaN, acos returns x.If |x| > 1, acos returns NaN with invalid signal.acos conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).acosfSynopsis#include float acosf(float x);Chapter 28 - Mathematics255