building common-math on Solaris SPARC gives "error: floating point number too
small"
------------------------------------------------------------------------------------
Key: MATH-721
URL: https://issues.apache.org/jira/browse/MATH-721
Project: Commons Math
Issue Type: Bug
Affects Versions: 2.2
Environment: Build environment is:
mvn --version
Apache Maven 3.0.3 (rNON-CANONICAL_2011-10-13_22-23_builder; 2011-10-13
22:23:49+0200)
Maven home: /usr/local/share/maven-3.0.3
Java version: 1.7.0-internal, vendor: Oracle Corporation
Java home: /usr/local/share/jdk1.7.0_1/jre
Default locale: de_DE, platform encoding: UTF-8
OS name: "sunos", version: "5.10", arch: "sparc", family: "unix"
Reporter: Jörg Prante
It seems the assumption in MathUtils.java
/** Safe minimum, such that 1 / SAFE_MIN does not overflow.
* <p>In IEEE 754 arithmetic, this is also the smallest normalized
* number 2<sup>-1022</sup>.</p>
*/
public static final double SAFE_MIN = 0x1.0p-1022;
does not work on my openjdk 1.7.0_1 on Solaris SPARC, because I get the
following build error:
[INFO] Compiling 457 source files to
/opt/builder/projects/commons-math-2.2-src/target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/main/java/org/apache/commons/math/util/MathUtils.java:[42,42]
error: floating point number too small
[INFO] 1error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
and also in the tests I encounter the error when parsing floating point
constants
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:2.1:testCompile
(default-testCompile) on project commons-math: Compilation failure: Compilation
failure:
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/util/FastMathTest.java:[1050,69]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/util/FastMathTest.java:[1055,28]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/util/FastMathTest.java:[1055,69]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/util/FastMathTest.java:[1056,28]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/util/FastMathTest.java:[1062,70]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/util/FastMathTest.java:[1063,70]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/util/FastMathTest.java:[1068,70]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/util/FastMathTest.java:[1069,70]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/optimization/general/LevenbergMarquardtOptimizerTest.java:[503,51]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/optimization/general/LevenbergMarquardtOptimizerTest.java:[503,66]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/estimation/LevenbergMarquardtEstimatorTest.java:[583,52]
error: floating point number too small
[ERROR]
[ERROR]
/opt/builder/projects/commons-math-2.2-src/src/test/java/org/apache/commons/math/estimation/LevenbergMarquardtEstimatorTest.java:[585,52]
error: floating point number too small
I suggest using java.lang.Double.MIN_NORMAL for a platform normalized minimal
floating point value.
A quick program for printing Double.MIN_NORMAL gives the following result.
class test {
public static void main(String[] args) {
System.out.println("min float = " + Double.MIN_NORMAL );
}
}
java test
min float = 2.2250738585072014E-308
Could it be an openjdk glitch? Thank you for any comments and help how this
could be fixed.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
