FULL PRODUCT VERSION :
java version "1.7.0_40"
Java(TM) SE Runtime Environment (build 1.7.0_40-b43)
Java HotSpot(TM) 64-Bit Server VM (build 24.0-b56, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux 64 bit (3.0.58-0.6.6-default #1 SMP Tue Feb 19 11:07:00 UTC 2013 (1576ecd) x86_64 x86_64 x86_64 GNU/Linux)
Same behaviour noticed on Windows 7 - 64 bit

A DESCRIPTION OF THE PROBLEM :

Calculation of the exponenet in java.lang.Math has changed
Using the following input: -1.0858298662222383

gives 0.33762148893674004000 on jdk1.7.0_u25
but 0.33762148893674000000 on jdk1.7.0_u40
The latter value is not correct

REGRESSION. Last worked in version 7u25

REGRESSION : Additional Information
java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the test program below for both java versions to see the difference

public class TestExp {
  public static void main(String [] args) {
    double y = -1.0858298662222383;
    double res = java.lang.Math.exp(y);
    System.out.printf("result is %.20f",res);
  }
}

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
result should be the same
ACTUAL -
results are different as described above.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class TestExp {
  public static void main(String [] args) {
    double y = -1.0858298662222383;
    double res = java.lang.Math.exp(y);
    System.out.printf("result is %.20f",res);
  }
}
---------- END SOURCE ----------