[ https://issues.apache.org/jira/browse/MATH-721?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Luc Maisonobe resolved MATH-721. -------------------------------- Resolution: Fixed Fix Version/s: 3.1 Fixed in subversion repository as of r1328492 > 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 > Fix For: 3.1 > > > 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