CrossWorks for ARM User Guide

frexp stores power of two in the int object pointed to by exp and returns the value x,such that x has a magnitude in the interval [1/2, 1) or zero, and value equals x * 2^exp.If x is zero, both parts of the result are zero.IEC 60559 mathlibrary behaviorPortabilityIf x is Infinity or NaN, frexp returns x and stores zero into the int object pointed to byexp.frexp conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).frexpfSynopsisDescriptionIEC 60559 mathlibrary behaviorPortability#include float frexp(float x, int *exp);frexpf breaks a floating-point number into a normalized fraction and an integral powerof 2.frexpf stores power of two in the int object pointed to by exp and returns the value x,such that x has a magnitude in the interval [1/2, 1) or zero, and value equals x * 2^exp.If x is zero, both parts of the result are zero.If x is Infinity or NaN, frexpf returns x and stores zero into the int object pointed to byexp.frexpf conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).hypotSynopsisDescriptionIEC 60559 mathlibrary behaviorPortability#include double hypot(double x, double y);hypot compute the square root of the sum of the squares of x and y, sqrt(x*x + y*y),without undue overflow or underflow. If x and y are the lengths of the sides of a rightangledtriangle, then hypot computes the length of the hypotenuse..If x or y is +Infinity or -Infinity, hypot returns Infinity.If x or y is NaN, hypot returns NaN.hypot conforms to ISO/IEC 9899:1999 (C99).hypotfSynopsis#include float hypotf(float x, float y);266 Chapter 28 Standard C Library Reference