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signBit JavaScript implementation
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| function signBit(La){ | |
| var Lgh_u$pi=null,tmp1=0; | |
| Lgh_u$pi={d:new DataView(new ArrayBuffer(8)),o:0}; | |
| Lgh_u$pi.d.setFloat64(Lgh_u$pi.o,La,true); | |
| tmp1=Lgh_u$pi.d.getInt32(1*4+Lgh_u$pi.o,true)|0; | |
| return ((tmp1|0)<0?1:0)|0; | |
| } | |
| //or way better perfromance wise, having the DataView being globally available (=created only once) | |
| var Lgh_u$pi=new DataView(new ArrayBuffer(8)); | |
| function signBit(La){ | |
| var tmp1=0; | |
| Lgh_u$pi.setFloat64(0,La,true); | |
| tmp1=Lgh_u$pi.getInt32(4,true)|0; | |
| return ((tmp1|0)<0?1:0)|0; | |
| } |
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