1.1 --- a/src/share/vm/utilities/globalDefinitions.hpp Thu May 22 11:36:23 2014 -0400
1.2 +++ b/src/share/vm/utilities/globalDefinitions.hpp Tue Jul 29 13:54:16 2014 +0200
1.3 @@ -558,6 +558,27 @@
1.4 return fabs(value);
1.5 }
1.6
1.7 +//----------------------------------------------------------------------------------------------------
1.8 +// Special casts
1.9 +// Cast floats into same-size integers and vice-versa w/o changing bit-pattern
1.10 +typedef union {
1.11 + jfloat f;
1.12 + jint i;
1.13 +} FloatIntConv;
1.14 +
1.15 +typedef union {
1.16 + jdouble d;
1.17 + jlong l;
1.18 + julong ul;
1.19 +} DoubleLongConv;
1.20 +
1.21 +inline jint jint_cast (jfloat x) { return ((FloatIntConv*)&x)->i; }
1.22 +inline jfloat jfloat_cast (jint x) { return ((FloatIntConv*)&x)->f; }
1.23 +
1.24 +inline jlong jlong_cast (jdouble x) { return ((DoubleLongConv*)&x)->l; }
1.25 +inline julong julong_cast (jdouble x) { return ((DoubleLongConv*)&x)->ul; }
1.26 +inline jdouble jdouble_cast (jlong x) { return ((DoubleLongConv*)&x)->d; }
1.27 +
1.28 inline jint low (jlong value) { return jint(value); }
1.29 inline jint high(jlong value) { return jint(value >> 32); }
1.30
