Bug 46646

Informational

GemStone/S 64 Bit

3.4, 3.3.5, 3.3.4, 3.3.3, 3.3.1, 3.3, 3.2.16, 3.2.15, 3.2.14, 3.2.13, 3.2.12, 3.2.11, 3.2.10, 3.2.9, 3.2.8, 3.2.7, 3.2.6, 3.2.5, 3.2.4, 3.2.3, 3.2.2, 3.2.1, 3.2, 3.1.0.6, 3.1.0.5, 3.1.x, 3.0.x, 2.x, earlier versions

Sign of -0.0

The expression

     -0.0 sign

returns 0.  This is according to the ANSI Smalltalk standard, 5.6.2.33, "Answer 1 if the receiver is positive, 0 if the receiver equals 0, and -1 if it is negative".   Pharo, and some interpretations of IEEE 754, disagree and expect this expression to return -1.


Last updated: 4/3/17