modf - extract signed integral and fractional values from floating-point
Standard C Library (libc, -lc)
modf(double value, double *iptr);
The modf() function breaks the argument value into integral and fractional
parts, each of which has the same sign as the argument. It stores
the integral part as a double in the object pointed to by iptr.
The modf() function returns the signed fractional part of value.
frexp(3), ldexp(3), math(3)
The modf() function conforms to ANSI X3.159-1989 (``ANSI C'').
BSD June 4, 1993 BSD
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