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Raymond Toy
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This is a long standing bug where INTEGER-DECODE-FLOAT returned incorrect values for denormal double-float numbers. The lower 32 bits of the double were not shifted enough when creating the integer result. As a side-effect, DECODE-FLOAT decodes denormal double-float's correctly and SCALE-FLOAT scales denormals correctly too. * src/code/float.lisp: * Shift the lower 32-bit of the fraction one more time to adjust for the fact that the upper 20 bits were shifted an extra time. * tests/float.lisp: * Add several tests for INTEGER-DECODE-FLOAT, SCALE-FLOAT, and DECODE-FLOAT. * src/general-info/release-20f.txt: * Add this bug fix to the notes.
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