Mercurial > hg > truffle
comparison src/share/vm/utilities/globalDefinitions.hpp @ 20804:7848fc12602b
Merge with jdk8u40-b25
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Tue, 07 Apr 2015 14:58:49 +0200 |
| parents | 52b4284cb496 b6a8cc1e0d92 |
| children | be896a1983c0 |
comparison
equal
deleted
inserted
replaced
| 20184:84105dcdb05b | 20804:7848fc12602b |
|---|---|
| 555 // convert the operand to double, avoiding a dependency on __fabsf which | 555 // convert the operand to double, avoiding a dependency on __fabsf which |
| 556 // doesn't exist in early versions of Solaris 8. | 556 // doesn't exist in early versions of Solaris 8. |
| 557 inline double fabsd(double value) { | 557 inline double fabsd(double value) { |
| 558 return fabs(value); | 558 return fabs(value); |
| 559 } | 559 } |
| 560 | |
| 561 //---------------------------------------------------------------------------------------------------- | |
| 562 // Special casts | |
| 563 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern | |
| 564 typedef union { | |
| 565 jfloat f; | |
| 566 jint i; | |
| 567 } FloatIntConv; | |
| 568 | |
| 569 typedef union { | |
| 570 jdouble d; | |
| 571 jlong l; | |
| 572 julong ul; | |
| 573 } DoubleLongConv; | |
| 574 | |
| 575 inline jint jint_cast (jfloat x) { return ((FloatIntConv*)&x)->i; } | |
| 576 inline jfloat jfloat_cast (jint x) { return ((FloatIntConv*)&x)->f; } | |
| 577 | |
| 578 inline jlong jlong_cast (jdouble x) { return ((DoubleLongConv*)&x)->l; } | |
| 579 inline julong julong_cast (jdouble x) { return ((DoubleLongConv*)&x)->ul; } | |
| 580 inline jdouble jdouble_cast (jlong x) { return ((DoubleLongConv*)&x)->d; } | |
| 560 | 581 |
| 561 inline jint low (jlong value) { return jint(value); } | 582 inline jint low (jlong value) { return jint(value); } |
| 562 inline jint high(jlong value) { return jint(value >> 32); } | 583 inline jint high(jlong value) { return jint(value >> 32); } |
| 563 | 584 |
| 564 // the fancy casts are a hopefully portable way | 585 // the fancy casts are a hopefully portable way |