Decomposes a floating-point number.
#include <math.h> float modff (x, iptr) float x; float *iptr; double modf (x, iptr) double x, *iptr; long double modfl (x, iptr) long double x, *iptr;
The modff, modf, and modfl subroutines break the x parameter into integral and fractional parts, each of which has the same sign as the argument. It stores the integral part as a floating-point value in the object pointed to by iptr.
| x | Specifies the value to be computed. |
| iptr | Points to the object where the integral part is stored. |
Upon successful completion, themodff, modf, and mofl subroutines return the signed fractional part of x.
If x is NaN, a NaN is returned, and *iptr is set to a NaN.
If x is ±Inf, ±0 is returned, and *iptr is set to ±Inf.
class, _class, finite, isnan, or unordered Subroutines and ldexp, ldexpf, or ldexpl Subroutine
math.h in AIX 5L Version 5.2 Files Reference.
Subroutines Overview in AIX 5L Version 5.2 General Programming Concepts: Writing and Debugging Programs.
128-Bit long Double Floating-Point Format in AIX 5L Version 5.2 General Programming Concepts: Writing and Debugging Programs.