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frexp — split a floating point number


genType frexp( genType x,
  out genIType exp);
genDType frexp( genDType x,
  out genIType exp);



Specifies the value from which significand and exponent are to be extracted.

out exp

Specifies the variable into which to place the exponent


frexp extracts x into a floating-point significand in the range [0.5, 1.0) and in integral exponent of two, such that:

x = significand 2 exponent

The significand is returned by the function and the exponent is returned in the output parameter exp. For a floating-point value of zero, the significand and exponent are both zero. For a floating-point value that is an infinity or a floating-point NaN, the results are undefined.

Version Support

OpenGL Shading Language Version
Function Name 1.10 1.20 1.30 1.40 1.50 3.30 4.00 4.10 4.20 4.30 4.40 4.50
frexp (genType) - - - - - -
frexp (genDType) - - - - - -

See Also


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