diff --git a/prism/ext/lpsolve55/src/lp_solve_5.5/lp_solve/ccc b/prism/ext/lpsolve55/src/lp_solve_5.5/lp_solve/ccc
index 35b89fbf..e76b48b0 100644
--- a/prism/ext/lpsolve55/src/lp_solve_5.5/lp_solve/ccc
+++ b/prism/ext/lpsolve55/src/lp_solve_5.5/lp_solve/ccc
@@ -20,7 +20,7 @@ math=-lm
 echo '#include <stdio.h>'>>/tmp/isnan.c
 echo '#include <stdlib.h>'>>/tmp/isnan.c
 echo '#include <math.h>'>>/tmp/isnan.c
-echo 'main(){isnan(0);}'>>/tmp/isnan.c
+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
 $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
diff --git a/prism/ext/lpsolve55/src/lp_solve_5.5/lp_solve/ccc.osx b/prism/ext/lpsolve55/src/lp_solve_5.5/lp_solve/ccc.osx
index 0066636a..e7def8e0 100644
--- a/prism/ext/lpsolve55/src/lp_solve_5.5/lp_solve/ccc.osx
+++ b/prism/ext/lpsolve55/src/lp_solve_5.5/lp_solve/ccc.osx
@@ -20,7 +20,7 @@ math=-lm
 echo '#include <stdio.h>'>>/tmp/isnan.c
 echo '#include <stdlib.h>'>>/tmp/isnan.c
 echo '#include <math.h>'>>/tmp/isnan.c
-echo 'main(){isnan(0);}'>>/tmp/isnan.c
+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
 $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
diff --git a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc
index 4ec2d232..64a37758 100644
--- a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc
+++ b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc
@@ -28,7 +28,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
 echo '#include <stdio.h>'>>/tmp/isnan.c
 echo '#include <stdlib.h>'>>/tmp/isnan.c
 echo '#include <math.h>'>>/tmp/isnan.c
-echo 'main(){isnan(0);}'>>/tmp/isnan.c
+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
 $c $CFLAGS /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
diff --git a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.aix b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.aix
index 692e805a..8fac7af8 100644
--- a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.aix
+++ b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.aix
@@ -23,7 +23,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
 echo '#include <stdio.h>'>>/tmp/isnan.c
 echo '#include <stdlib.h>'>>/tmp/isnan.c
 echo '#include <math.h>'>>/tmp/isnan.c
-echo 'main(){isnan(0);}'>>/tmp/isnan.c
+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
 $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
diff --git a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.cygwin b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.cygwin
index 46694367..c342c76c 100644
--- a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.cygwin
+++ b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.cygwin
@@ -18,7 +18,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
 echo '#include <stdio.h>'>>/tmp/isnan.c
 echo '#include <stdlib.h>'>>/tmp/isnan.c
 echo '#include <math.h>'>>/tmp/isnan.c
-echo 'main(){isnan(0);}'>>/tmp/isnan.c
+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
 $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
diff --git a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.hp-ux b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.hp-ux
index f86fd6b0..61c45bd4 100644
--- a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.hp-ux
+++ b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.hp-ux
@@ -18,7 +18,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
 echo '#include <stdio.h>'>>/tmp/isnan.c
 echo '#include <stdlib.h>'>>/tmp/isnan.c
 echo '#include <math.h>'>>/tmp/isnan.c
-echo 'main(){isnan(0);}'>>/tmp/isnan.c
+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
 $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
diff --git a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.osx b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.osx
index 738168f5..8b274165 100644
--- a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.osx
+++ b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.osx
@@ -18,7 +18,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
 echo '#include <stdio.h>'>>/tmp/isnan.c
 echo '#include <stdlib.h>'>>/tmp/isnan.c
 echo '#include <math.h>'>>/tmp/isnan.c
-echo 'main(){isnan(0);}'>>/tmp/isnan.c
+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
 $c -arch i386 /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
diff --git a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.osx64 b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.osx64
index 37c7dad5..c0ecdb2c 100644
--- a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.osx64
+++ b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.osx64
@@ -18,7 +18,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
 echo '#include <stdio.h>'>>/tmp/isnan.c
 echo '#include <stdlib.h>'>>/tmp/isnan.c
 echo '#include <math.h>'>>/tmp/isnan.c
-echo 'main(){isnan(0);}'>>/tmp/isnan.c
+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
 $c -arch x86_64 /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
diff --git a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.solaris b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.solaris
index 34c85635..3f7f2d95 100644
--- a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.solaris
+++ b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/ccc.solaris
@@ -18,7 +18,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
 echo '#include <stdio.h>'>>/tmp/isnan.c
 echo '#include <stdlib.h>'>>/tmp/isnan.c
 echo '#include <math.h>'>>/tmp/isnan.c
-echo 'main(){isnan(0);}'>>/tmp/isnan.c
+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
 $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=
diff --git a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/cccLUSOL.osx b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/cccLUSOL.osx
index b3977cac..45dec02d 100644
--- a/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/cccLUSOL.osx
+++ b/prism/ext/lpsolve55/src/lp_solve_5.5/lpsolve55/cccLUSOL.osx
@@ -17,7 +17,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
 echo '#include <stdio.h>'>>/tmp/isnan.c
 echo '#include <stdlib.h>'>>/tmp/isnan.c
 echo '#include <math.h>'>>/tmp/isnan.c
-echo 'main(){isnan(0);}'>>/tmp/isnan.c
+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
 $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
 if [ $? = 0 ]
 then NOISNAN=