* gfortran.dg/output_exponents_1.f90: New test.

From-SVN: r100319

gcc/testsuite/ChangeLog

 2005-05-29  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
 
+	* gfortran.dg/output_exponents_1.f90: New test.
+
+2005-05-29  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
+
 	* gfortran.dg/dollar_edit_descriptor-1.f: New test.
 
 2005-05-28  Mark Mitchell  <mark@codesourcery.com>

gcc/testsuite/gfortran.dg/output_exponents_1.f90

+! { dg-do run }
+! PR 21376
+! we used to take the logarithm of zero in this special case
+  character*10 c
+  write (c,'(e10.4)') 1.0
+  if(c /= "0.1000E+01") call abort
+  write (c,'(e10.4)') 0.0
+  if(c /= "0.0000E+00") call abort
+  write (c,'(e10.4)') 1.0d100
+  if(c /= "0.1000+101") call abort
+  write (c,'(e10.4)') 1.0d-102
+  if(c /= "0.1000-101") call abort
+end