The Java language allows platforms to use available floating-point hardware that can provide extended floating-point support with exponents that contain more bits than the standard Java primitive type double (in the absence of the strictfp modifier). Consequently, these platforms can represent a superset of the values that can be represented by the standard floating-point types. Floating-point computations on such platforms can produce different results than would be obtained if the floating-point computations were restricted to the standard representations of float and double. According to the JLS, �������‚�š�š�š§15��������€š�š�š�š§15.4, "FP-strict Expressions" [JLS 2005]:
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Magnitude loss would also occur if the value were stored to memory �������€š�š�š�������‚�š�š������‚�š����‚��“ ��������‚�š�š�š��������€š�š�š�������€š�š�����€š���€œ for example, to a field of type float.
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Ensuring the Accuracy of Floating-Point Numbers | |
[JLS 2005] | �������‚�š�š�š§15��������€š�š�š�š§15.4, FP-strict Expressions |
[JPL 2006] | 9.1.3, Strict and Non-Strict Floating-Point Arithmetic |
Making Deep Copies of Objects, Using strictfp, and Optimizing String Performance |
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