diff --git a/interface/CMakeLists.txt b/interface/CMakeLists.txt
index 5ea39f864..bfb228e38 100644
--- a/interface/CMakeLists.txt
+++ b/interface/CMakeLists.txt
@@ -90,13 +90,13 @@ foreach (CBLAS_FLAG ${CBLAS_FLAGS})
   GenerateNamedObjects("trsm.c" "TRMM" "trmm" ${CBLAS_FLAG})
 
   # max and imax are compiled 4 times
-  GenerateNamedObjects("max.c" "" "" ${CBLAS_FLAG})
-  GenerateNamedObjects("max.c" "USE_ABS" "amax" ${CBLAS_FLAG})
+  GenerateNamedObjects("max.c" "USE_MAX" "" ${CBLAS_FLAG})
+  GenerateNamedObjects("max.c" "USE_ABS;USE_MAX" "amax" ${CBLAS_FLAG})
   GenerateNamedObjects("max.c" "USE_ABS;USE_MIN" "amin" ${CBLAS_FLAG})
   GenerateNamedObjects("max.c" "USE_MIN" "min" ${CBLAS_FLAG})
 
-  GenerateNamedObjects("imax.c" "" "i*max" ${CBLAS_FLAG})
-  GenerateNamedObjects("imax.c" "USE_ABS" "i*amax" ${CBLAS_FLAG})
+  GenerateNamedObjects("imax.c" "USE_MAX" "i*max" ${CBLAS_FLAG})
+  GenerateNamedObjects("imax.c" "USE_ABS;USE_MAX" "i*amax" ${CBLAS_FLAG})
   GenerateNamedObjects("imax.c" "USE_ABS;USE_MIN" "i*amin" ${CBLAS_FLAG})
   GenerateNamedObjects("imax.c" "USE_MIN" "i*min" ${CBLAS_FLAG})
 
@@ -123,7 +123,7 @@ foreach (float_type ${FLOAT_TYPES})
     GenerateNamedObjects("nrm2.c" "" "scnrm2" ${CBLAS_FLAG} "" "" true "COMPLEX")
     GenerateNamedObjects("zrot.c" "" "csrot" ${CBLAS_FLAG} "" "" true "COMPLEX")
     GenerateNamedObjects("max.c" "USE_ABS;USE_MIN" "scamin" ${CBLAS_FLAG} "" "" true "COMPLEX")
-    GenerateNamedObjects("max.c" "USE_ABS" "scamax" ${CBLAS_FLAG} "" "" true "COMPLEX")
+    GenerateNamedObjects("max.c" "USE_ABS;USE_MAX" "scamax" ${CBLAS_FLAG} "" "" true "COMPLEX")
     GenerateNamedObjects("asum.c" "" "scasum" ${CBLAS_FLAG} "" "" true "COMPLEX")
     GenerateNamedObjects("sum.c" "" "scsum" ${CBLAS_FLAG} "" "" true "COMPLEX")
   endif ()
@@ -132,7 +132,7 @@ foreach (float_type ${FLOAT_TYPES})
     GenerateNamedObjects("nrm2.c" "" "dznrm2" ${CBLAS_FLAG} "" "" true "ZCOMPLEX")
     GenerateNamedObjects("zrot.c" "" "zdrot" ${CBLAS_FLAG} "" "" true "ZCOMPLEX")
     GenerateNamedObjects("max.c" "USE_ABS;USE_MIN" "dzamin" ${CBLAS_FLAG} "" "" true "ZCOMPLEX")
-    GenerateNamedObjects("max.c" "USE_ABS" "dzamax" ${CBLAS_FLAG} "" "" true "ZCOMPLEX")
+    GenerateNamedObjects("max.c" "USE_ABS;USE_MAX" "dzamax" ${CBLAS_FLAG} "" "" true "ZCOMPLEX")
     GenerateNamedObjects("asum.c" "" "dzasum" ${CBLAS_FLAG} "" "" true "ZCOMPLEX")
     GenerateNamedObjects("sum.c" "" "dzsum" ${CBLAS_FLAG} "" "" true "ZCOMPLEX")
   endif ()
diff --git a/interface/Makefile b/interface/Makefile
index 3f0dcca28..c3626713d 100644
--- a/interface/Makefile
+++ b/interface/Makefile
@@ -603,22 +603,22 @@ qxnrm2.$(SUFFIX) qxnrm2.$(PSUFFIX) : nrm2.c
 	$(CC) $(CFLAGS) -c $< -o $(@F)
 
 samax.$(SUFFIX) samax.$(PSUFFIX) : max.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 damax.$(SUFFIX) damax.$(PSUFFIX) : max.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 qamax.$(SUFFIX) qamax.$(PSUFFIX) : max.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 scamax.$(SUFFIX) scamax.$(PSUFFIX) : max.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 dzamax.$(SUFFIX) dzamax.$(PSUFFIX) : max.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 qxamax.$(SUFFIX) qxamax.$(PSUFFIX) : max.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 samin.$(SUFFIX) samin.$(PSUFFIX) : max.c
 	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MIN $< -o $(@F)
@@ -639,13 +639,13 @@ qxamin.$(SUFFIX) qxamin.$(PSUFFIX) : max.c
 	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MIN $< -o $(@F)
 
 smax.$(SUFFIX) smax.$(PSUFFIX) : max.c
-	$(CC) $(CFLAGS) -c -UUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -UUSE_ABS -DUSE_MAX $< -o $(@F)
 
 dmax.$(SUFFIX) dmax.$(PSUFFIX) : max.c
-	$(CC) $(CFLAGS) -c -UUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -UUSE_ABS -DUSE_MAX $< -o $(@F)
 
 qmax.$(SUFFIX) qmax.$(PSUFFIX) : max.c
-	$(CC) $(CFLAGS) -c -UUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -UUSE_ABS -DUSE_MAX $< -o $(@F)
 
 smin.$(SUFFIX) smin.$(PSUFFIX) : max.c
 	$(CC) $(CFLAGS) -c -UUSE_ABS -DUSE_MIN $< -o $(@F)
@@ -657,22 +657,22 @@ qmin.$(SUFFIX) qmin.$(PSUFFIX) : max.c
 	$(CC) $(CFLAGS) -c -UUSE_ABS -DUSE_MIN $< -o $(@F)
 
 isamax.$(SUFFIX) isamax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 idamax.$(SUFFIX) idamax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 iqamax.$(SUFFIX) iqamax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 icamax.$(SUFFIX) icamax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 izamax.$(SUFFIX) izamax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 ixamax.$(SUFFIX) ixamax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 isamin.$(SUFFIX) isamin.$(PSUFFIX) : imax.c
 	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MIN $< -o $(@F)
@@ -693,13 +693,13 @@ ixamin.$(SUFFIX) ixamin.$(PSUFFIX) : imax.c
 	$(CC) $(CFLAGS) -c -DUSE_ABS -DUSE_MIN $< -o $(@F)
 
 ismax.$(SUFFIX) ismax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -c -UUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -UUSE_ABS -DUSE_MAX $< -o $(@F)
 
 idmax.$(SUFFIX) idmax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -c -UUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -UUSE_ABS -DUSE_MAX $< -o $(@F)
 
 iqmax.$(SUFFIX) iqmax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -c -UUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -c -UUSE_ABS -DUSE_MAX $< -o $(@F)
 
 ismin.$(SUFFIX) ismin.$(PSUFFIX) : imax.c
 	$(CC) $(CFLAGS) -c -UUSE_ABS -DUSE_MIN $< -o $(@F)
@@ -1372,16 +1372,16 @@ xhemm3m.$(SUFFIX) xhemm3m.$(PSUFFIX) : symm.c
 	$(CC) -c $(CFLAGS) -DGEMM3M -DHEMM $< -o $(@F)
 
 cblas_isamax.$(SUFFIX) cblas_isamax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -DCBLAS -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -DCBLAS -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 cblas_idamax.$(SUFFIX) cblas_idamax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -DCBLAS -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -DCBLAS -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 cblas_icamax.$(SUFFIX) cblas_icamax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -DCBLAS -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -DCBLAS -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 cblas_izamax.$(SUFFIX) cblas_izamax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -DCBLAS -c -DUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -DCBLAS -c -DUSE_ABS -DUSE_MAX $< -o $(@F)
 
 cblas_isamin.$(SUFFIX) cblas_isamin.$(PSUFFIX) : imax.c
 	$(CC) $(CFLAGS) -DCBLAS -c -DUSE_ABS -DUSE_MIN $< -o $(@F)
@@ -1396,10 +1396,10 @@ cblas_izamin.$(SUFFIX) cblas_izamin.$(PSUFFIX) : imax.c
 	$(CC) $(CFLAGS) -DCBLAS -c -DUSE_ABS -DUSE_MIN $< -o $(@F)
 
 cblas_ismax.$(SUFFIX) cblas_ismax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -DUSE_MAX $< -o $(@F)
 
 cblas_idmax.$(SUFFIX) cblas_idmax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -DUSE_MAX $< -o $(@F)
 
 cblas_ismin.$(SUFFIX) cblas_ismin.$(PSUFFIX) : imax.c
 	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -DUSE_MIN $< -o $(@F)
@@ -1408,10 +1408,10 @@ cblas_idmin.$(SUFFIX) cblas_idmin.$(PSUFFIX) : imax.c
 	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -DUSE_MIN $< -o $(@F)
 
 cblas_icmax.$(SUFFIX) cblas_icmax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -DUSE_MAX $< -o $(@F)
 
 cblas_izmax.$(SUFFIX) cblas_izmax.$(PSUFFIX) : imax.c
-	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -UUSE_MIN $< -o $(@F)
+	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -DUSE_MAX $< -o $(@F)
 
 cblas_icmin.$(SUFFIX) cblas_icmin.$(PSUFFIX) : imax.c
 	$(CC) $(CFLAGS) -DCBLAS -c -UUSE_ABS -DUSE_MIN $< -o $(@F)
diff --git a/interface/imax.c b/interface/imax.c
index 456460d98..cdbcf0bdf 100644
--- a/interface/imax.c
+++ b/interface/imax.c
@@ -46,7 +46,7 @@
 
 #ifdef USE_ABS
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 
 /* ABS & MAX */
 #ifndef COMPLEX
@@ -69,6 +69,7 @@
 
 #else
 
+#if defined(USE_MIN)
 /* ABS & MIN */
 #ifndef COMPLEX
 #ifdef XDOUBLE
@@ -87,12 +88,13 @@
 #define MAX_K	ICAMIN_K
 #endif
 #endif
+#endif
 
 #endif
 
 #else
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 
 /* MAX */
 #ifdef XDOUBLE
@@ -103,7 +105,7 @@
 #define MAX_K	ISMAX_K
 #endif
 
-#else
+#elif defined(USE_MIN)
 
 /* MIN */
 #ifdef XDOUBLE
diff --git a/interface/max.c b/interface/max.c
index f05977448..5613a810e 100644
--- a/interface/max.c
+++ b/interface/max.c
@@ -46,7 +46,7 @@
 
 #ifdef USE_ABS
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 
 /* ABS & MAX */
 #ifndef COMPLEX
@@ -67,7 +67,7 @@
 #endif
 #endif
 
-#else
+#elif defined(USE_MIN)
 
 /* ABS & MIN */
 #ifndef COMPLEX
@@ -92,7 +92,7 @@
 
 #else
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 
 /* MAX */
 #ifdef XDOUBLE
@@ -103,7 +103,7 @@
 #define MAX_K	SMAX_K
 #endif
 
-#else
+#elif defined (USE_MIN)
 
 /* MIN */
 #ifdef XDOUBLE
diff --git a/kernel/CMakeLists.txt b/kernel/CMakeLists.txt
index b3310e87e..b1735f34a 100644
--- a/kernel/CMakeLists.txt
+++ b/kernel/CMakeLists.txt
@@ -41,21 +41,21 @@ function (build_core TARGET_CORE KDIR TSUFFIX KERNEL_DEFINITIONS)
     foreach (float_type ${FLOAT_TYPES})
       # a bit of metaprogramming here to pull out the appropriate KERNEL var
       string(SUBSTRING ${float_type} 0 1 float_char)
-      GenerateNamedObjects("${KERNELDIR}/${${float_char}AMAXKERNEL}" "USE_ABS" "amax_k" false "" "" false ${float_type})
+      GenerateNamedObjects("${KERNELDIR}/${${float_char}AMAXKERNEL}" "USE_ABS;USE_MAX" "amax_k" false "" "" false ${float_type})
       GenerateNamedObjects("${KERNELDIR}/${${float_char}AMINKERNEL}" "USE_ABS;USE_MIN" "amin_k" false "" "" false ${float_type})
       if (DEFINED ${float_char}MAXKERNEL)
-        GenerateNamedObjects("${KERNELDIR}/${${float_char}MAXKERNEL}" "" "max_k" false "" "" false ${float_type})
+        GenerateNamedObjects("${KERNELDIR}/${${float_char}MAXKERNEL}" "USE_MAX" "max_k" false "" "" false ${float_type})
       endif ()
       if (DEFINED ${float_char}MINKERNEL)
-        GenerateNamedObjects("${KERNELDIR}/${${float_char}MINKERNEL}" "" "min_k" false "" "" false ${float_type})
+        GenerateNamedObjects("${KERNELDIR}/${${float_char}MINKERNEL}" "USE_MIN" "min_k" false "" "" false ${float_type})
       endif ()
-      GenerateNamedObjects("${KERNELDIR}/${I${float_char}AMAXKERNEL}" "USE_ABS" "i*amax_k" false "" "" false ${float_type})
+      GenerateNamedObjects("${KERNELDIR}/${I${float_char}AMAXKERNEL}" "USE_ABS;USE_MAX" "i*amax_k" false "" "" false ${float_type})
       GenerateNamedObjects("${KERNELDIR}/${I${float_char}AMINKERNEL}" "USE_ABS;USE_MIN" "i*amin_k" false "" "" false ${float_type})
       if (DEFINED I${float_char}MAXKERNEL)
-        GenerateNamedObjects("${KERNELDIR}/${I${float_char}MAXKERNEL}" "" "i*max_k" false "" "" false ${float_type})
+        GenerateNamedObjects("${KERNELDIR}/${I${float_char}MAXKERNEL}" "USE_MAX" "i*max_k" false "" "" false ${float_type})
       endif ()
       if (DEFINED I${float_char}MINKERNEL)
-        GenerateNamedObjects("${KERNELDIR}/${I${float_char}MINKERNEL}" "" "i*min_k" false "" "" false ${float_type})
+        GenerateNamedObjects("${KERNELDIR}/${I${float_char}MINKERNEL}" "USE_MIN" "i*min_k" false "" "" false ${float_type})
       endif ()
       GenerateNamedObjects("${KERNELDIR}/${${float_char}ASUMKERNEL}" "" "asum_k" false "" "" false ${float_type})
       GenerateNamedObjects("${KERNELDIR}/${${float_char}AXPYKERNEL}" "" "axpy_k" false "" "" false ${float_type})
diff --git a/kernel/Makefile.L1 b/kernel/Makefile.L1
index 970703230..68dc8a234 100644
--- a/kernel/Makefile.L1
+++ b/kernel/Makefile.L1
@@ -522,22 +522,22 @@ XBLASOBJS	+= \
 
 
 $(KDIR)samax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)samax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(SAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE  -DUSE_ABS -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE  -DUSE_ABS -DUSE_MAX $< -o $@
 
 $(KDIR)damax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)damax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(DAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -DDOUBLE  -DUSE_ABS -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -DDOUBLE  -DUSE_ABS -DUSE_MAX $< -o $@
 
 $(KDIR)qamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)qamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(QAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -DXDOUBLE -DUSE_ABS -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -DXDOUBLE -DUSE_ABS -DUSE_MAX $< -o $@
 
 $(KDIR)camax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)camax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(CAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -DCOMPLEX -UDOUBLE  -DUSE_ABS -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -DCOMPLEX -UDOUBLE  -DUSE_ABS -DUSE_MAX $< -o $@
 
 $(KDIR)zamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)zamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(ZAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -DCOMPLEX -DDOUBLE  -DUSE_ABS -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -DCOMPLEX -DDOUBLE  -DUSE_ABS -DUSE_MAX $< -o $@
 
 $(KDIR)xamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)xamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(XAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -DCOMPLEX -DXDOUBLE -DUSE_ABS -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -DCOMPLEX -DXDOUBLE -DUSE_ABS -DUSE_MAX $< -o $@
 
 ### AMIN ###
 
@@ -562,13 +562,13 @@ $(KDIR)xamin_k$(TSUFFIX).$(SUFFIX)  $(KDIR)xamin_k$(TPSUFFIX).$(PSUFFIX)  : $(KE
 ### MAX ###
 
 $(KDIR)smax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)smax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(SMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE -UUSE_ABS  -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE -UUSE_ABS  -DUSE_MAX $< -o $@
 
 $(KDIR)dmax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)dmax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(DMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -DDOUBLE -UUSE_ABS  -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -DDOUBLE -UUSE_ABS  -DUSE_MAX $< -o $@
 
 $(KDIR)qmax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)qmax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(QMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -DXDOUBLE -UUSE_ABS -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -DXDOUBLE -UUSE_ABS -DUSE_MAX $< -o $@
 
 ### MIN ###
 
@@ -585,22 +585,22 @@ $(KDIR)qmin_k$(TSUFFIX).$(SUFFIX)  $(KDIR)qmin_k$(TPSUFFIX).$(PSUFFIX)  : $(KERN
 ### IAMAX ###
 
 $(KDIR)isamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)isamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(ISAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE -DUSE_ABS  -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE -DUSE_ABS  -DUSE_MAX $< -o $@
 
 $(KDIR)idamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)idamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(IDAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -DDOUBLE -DUSE_ABS  -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -DDOUBLE -DUSE_ABS  -DUSE_MAX $< -o $@
 
 $(KDIR)iqamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)iqamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(IQAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -DXDOUBLE -DUSE_ABS -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -DXDOUBLE -DUSE_ABS -DUSE_MAX $< -o $@
 
 $(KDIR)icamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)icamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(ICAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -DCOMPLEX -UDOUBLE -DUSE_ABS  -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -DCOMPLEX -UDOUBLE -DUSE_ABS  -DUSE_MAX $< -o $@
 
 $(KDIR)izamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)izamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(IZAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -DCOMPLEX -DDOUBLE -DUSE_ABS  -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -DCOMPLEX -DDOUBLE -DUSE_ABS  -DUSE_MAX $< -o $@
 
 $(KDIR)ixamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)ixamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(IXAMAXKERNEL)
-	$(CC) -c $(CFLAGS) -DCOMPLEX -DXDOUBLE -DUSE_ABS -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -DCOMPLEX -DXDOUBLE -DUSE_ABS -DUSE_MAX $< -o $@
 
 ### IAMIN ###
 
@@ -625,13 +625,13 @@ $(KDIR)ixamin_k$(TSUFFIX).$(SUFFIX)  $(KDIR)ixamin_k$(TPSUFFIX).$(PSUFFIX)  : $(
 ### IMAX ###
 
 $(KDIR)ismax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)ismax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(ISMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE -UUSE_ABS  -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE -UUSE_ABS  -DUSE_MAX $< -o $@
 
 $(KDIR)idmax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)idmax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(IDMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -DDOUBLE -UUSE_ABS  -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -DDOUBLE -UUSE_ABS  -DUSE_MAX $< -o $@
 
 $(KDIR)iqmax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)iqmax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(IQMAXKERNEL)
-	$(CC) -c $(CFLAGS) -UCOMPLEX -DXDOUBLE -UUSE_ABS -UUSE_MIN $< -o $@
+	$(CC) -c $(CFLAGS) -UCOMPLEX -DXDOUBLE -UUSE_ABS -DUSE_MAX $< -o $@
 
 ### IMIN ###
 
diff --git a/kernel/alpha/amax.S b/kernel/alpha/amax.S
index e528adc07..122b1ccce 100644
--- a/kernel/alpha/amax.S
+++ b/kernel/alpha/amax.S
@@ -44,10 +44,12 @@
 #define X	$17
 #define INCX	$18
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define CMPLT(a, b) cmptlt a, b
-#else
+#elif defined(USE_MIN)
 #define CMPLT(a, b) cmptlt b, a
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #define STACKSIZE 6 * 8
diff --git a/kernel/alpha/iamax.S b/kernel/alpha/iamax.S
index 2be5d5d08..f4c4cabc5 100644
--- a/kernel/alpha/iamax.S
+++ b/kernel/alpha/iamax.S
@@ -45,10 +45,12 @@
 #define INCX	$18
 #define XX	$19
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define CMPLT(a, b) cmptlt a, b
-#else
+#elif defined(USE_MIN)
 #define CMPLT(a, b) cmptlt b, a
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #define STACKSIZE 6 * 8
diff --git a/kernel/alpha/imax.S b/kernel/alpha/imax.S
index d8958c86a..fadffa253 100644
--- a/kernel/alpha/imax.S
+++ b/kernel/alpha/imax.S
@@ -45,10 +45,12 @@
 #define INCX	$18
 #define XX	$19
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define CMPLT(a, b) cmptlt a, b
-#else
+#elif defined(USE_MIN)
 #define CMPLT(a, b) cmptlt b, a
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #define STACKSIZE 8 * 8
diff --git a/kernel/alpha/izamax.S b/kernel/alpha/izamax.S
index c932581ae..40a76821a 100644
--- a/kernel/alpha/izamax.S
+++ b/kernel/alpha/izamax.S
@@ -45,10 +45,12 @@
 #define INCX	$18
 #define XX	$19
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define CMPLT(a, b) cmptlt a, b
-#else
+#elif defined(USE_MIN)
 #define CMPLT(a, b) cmptlt b, a
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #define STACKSIZE 8 * 8
diff --git a/kernel/alpha/max.S b/kernel/alpha/max.S
index af1b8fb85..50a85ef24 100644
--- a/kernel/alpha/max.S
+++ b/kernel/alpha/max.S
@@ -44,10 +44,12 @@
 #define X	$17
 #define INCX	$18
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define CMPLT(a, b) cmptlt a, b
-#else
+#elif defined(USE_MIN)
 #define CMPLT(a, b) cmptlt b, a
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #define STACKSIZE 8 * 8
diff --git a/kernel/alpha/zamax.S b/kernel/alpha/zamax.S
index f1ea18d2d..f2cb06639 100644
--- a/kernel/alpha/zamax.S
+++ b/kernel/alpha/zamax.S
@@ -44,10 +44,12 @@
 #define X	$17
 #define INCX	$18
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define CMPLT(a, b) cmptlt a, b
-#else
+#elif defined(USE_MIN)
 #define CMPLT(a, b) cmptlt b, a
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #define STACKSIZE 8 * 8
diff --git a/kernel/ia64/izamax.S b/kernel/ia64/izamax.S
index 6d98ce4e1..dbe846fd4 100644
--- a/kernel/ia64/izamax.S
+++ b/kernel/ia64/izamax.S
@@ -47,12 +47,14 @@
 #define PREFETCH_SIZE (32 * 16 + 16)
 #endif
 
-#ifdef USE_MIN
+#if defined(USE_MIN)
 #define CMPUNC cmp.lt.unc
 #define CMP    cmp.lt
-#else
+#elif defined(USE_MAX)
 #define CMPUNC cmp.gt.unc
 #define CMP    cmp.gt
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #define RET	r8
diff --git a/kernel/sparc/amax.S b/kernel/sparc/amax.S
index 7729e5cb6..b80305ece 100644
--- a/kernel/sparc/amax.S
+++ b/kernel/sparc/amax.S
@@ -82,10 +82,12 @@
 #define a8	%f15
 #endif
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FCMOV	FMOVG
-#else
+#elif defined(USE_MIN)
 #define FCMOV	FMOVL
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 	PROLOGUE
diff --git a/kernel/sparc/iamax.S b/kernel/sparc/iamax.S
index eb4a1313d..b32dec5cd 100644
--- a/kernel/sparc/iamax.S
+++ b/kernel/sparc/iamax.S
@@ -88,12 +88,14 @@
 #define a8	%f15
 #endif
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FCMOV	FMOVG
 #define CMOV	movg
-#else
+#elif defined(USE_MIN)
 #define FCMOV	FMOVL
 #define CMOV	movl
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 	PROLOGUE
diff --git a/kernel/sparc/imax.S b/kernel/sparc/imax.S
index 1a2b9c51c..3b8650579 100644
--- a/kernel/sparc/imax.S
+++ b/kernel/sparc/imax.S
@@ -88,12 +88,14 @@
 #define a8	%f15
 #endif
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FCMOV	FMOVG
 #define CMOV	movg
-#else
+#elif defined(USE_MIN)
 #define FCMOV	FMOVL
 #define CMOV	movl
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 	PROLOGUE
diff --git a/kernel/sparc/izamax.S b/kernel/sparc/izamax.S
index 3d0a48e84..48fe538f4 100644
--- a/kernel/sparc/izamax.S
+++ b/kernel/sparc/izamax.S
@@ -96,12 +96,14 @@
 #define a8	%f19
 #endif
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FCMOV	FMOVG
 #define CMOV	movg
-#else
+#elif defined(USE_MIN)
 #define FCMOV	FMOVL
 #define CMOV	movl
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 
diff --git a/kernel/sparc/max.S b/kernel/sparc/max.S
index 252bc1921..1bea5f09a 100644
--- a/kernel/sparc/max.S
+++ b/kernel/sparc/max.S
@@ -82,10 +82,12 @@
 #define a8	%f15
 #endif
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FCMOV	FMOVG
-#else
+#elif defined(USE_MIN)
 #define FCMOV	FMOVL
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 	PROLOGUE
diff --git a/kernel/sparc/zamax.S b/kernel/sparc/zamax.S
index ac0966fbb..976243c67 100644
--- a/kernel/sparc/zamax.S
+++ b/kernel/sparc/zamax.S
@@ -90,10 +90,12 @@
 #define a8	%f19
 #endif
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FCMOV	FMOVG
-#else
+#elif defined(USE_MIN)
 #define FCMOV	FMOVL
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 	PROLOGUE
diff --git a/kernel/x86/amax.S b/kernel/x86/amax.S
index 2a3404c18..cb7e2f2a4 100644
--- a/kernel/x86/amax.S
+++ b/kernel/x86/amax.S
@@ -53,10 +53,12 @@
 #define X	%ecx
 #define I	%edx
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FMOV	fcmovbe
-#else
+#elif defined(USE_MIN)
 #define FMOV	fcmovnbe
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86/amax_sse.S b/kernel/x86/amax_sse.S
index e988660e5..59af12b53 100644
--- a/kernel/x86/amax_sse.S
+++ b/kernel/x86/amax_sse.S
@@ -51,9 +51,14 @@
 #define INCX	%edx
 #define I	%eax
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxps	maxps
+#define maxss	maxss
+#elif defined(USE_MIN)
 #define maxps	minps
 #define maxss	minss
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86/amax_sse2.S b/kernel/x86/amax_sse2.S
index e21927cb1..85be2b1bd 100644
--- a/kernel/x86/amax_sse2.S
+++ b/kernel/x86/amax_sse2.S
@@ -51,9 +51,14 @@
 #define INCX	%edx
 #define I	%eax
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxpd	maxpd
+#define maxsd	maxsd
+#elif defined(USE_MIN)
 #define maxpd	minpd
 #define maxsd	minsd
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86/iamax.S b/kernel/x86/iamax.S
index 1a7378474..b5202a2e0 100644
--- a/kernel/x86/iamax.S
+++ b/kernel/x86/iamax.S
@@ -53,12 +53,14 @@
 #define NUM	%edi
 #define RET	%eax
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FMOV	fcmovbe
 #define IMOV	cmovnbe
-#else
+#elif defined(USE_MIN)
 #define FMOV	fcmovnbe
 #define IMOV	cmovb
+#else
+#error Neither USE_MIN nor USE_MAX is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86/iamax_sse.S b/kernel/x86/iamax_sse.S
index dcd62bfc3..c8af2be61 100644
--- a/kernel/x86/iamax_sse.S
+++ b/kernel/x86/iamax_sse.S
@@ -55,9 +55,14 @@
 #define XX	%edi
 #define TEMP	%ebx
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxps	maxps
+#define maxss	maxss
+#elif defined(USE_MIN)
 #define maxps	minps
 #define maxss	minss
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #ifndef HAVE_SSE2
diff --git a/kernel/x86/iamax_sse2.S b/kernel/x86/iamax_sse2.S
index caa6fc87b..1657268b9 100644
--- a/kernel/x86/iamax_sse2.S
+++ b/kernel/x86/iamax_sse2.S
@@ -55,9 +55,14 @@
 #define XX	%edi
 #define TEMP	%ebx
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxpd	maxpd
+#define maxsd	maxsd
+#elif defined(USE_MIN)
 #define maxpd	minpd
 #define maxsd	minsd
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86/izamax.S b/kernel/x86/izamax.S
index de324ad7e..4602d5d1f 100644
--- a/kernel/x86/izamax.S
+++ b/kernel/x86/izamax.S
@@ -55,12 +55,14 @@
 #define NUM	%edi
 #define RET	%eax
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FMOV	fcmovbe
 #define IMOV	cmovnbe
-#else
+#elif defined(USE_MIN)
 #define FMOV	fcmovnb
 #define IMOV	cmovb
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86/izamax_sse.S b/kernel/x86/izamax_sse.S
index eed58be33..412d370b8 100644
--- a/kernel/x86/izamax_sse.S
+++ b/kernel/x86/izamax_sse.S
@@ -55,9 +55,14 @@
 #define XX	%edi
 #define TEMP	%ebx
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxps	maxps
+#define maxss	maxss
+#elif defined(USE_MIN)
 #define maxps	minps
 #define maxss	minss
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #ifndef HAVE_SSE2
diff --git a/kernel/x86/izamax_sse2.S b/kernel/x86/izamax_sse2.S
index d9e7a8bf0..38414e6f8 100644
--- a/kernel/x86/izamax_sse2.S
+++ b/kernel/x86/izamax_sse2.S
@@ -55,9 +55,14 @@
 #define XX	%edi
 #define TEMP	%ebx
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxpd	maxpd
+#define maxsd	maxsd
+#elif defined(USE_MIN)
 #define maxpd	minpd
 #define maxsd	minsd
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86/zamax.S b/kernel/x86/zamax.S
index 8af882341..5890d8d42 100644
--- a/kernel/x86/zamax.S
+++ b/kernel/x86/zamax.S
@@ -53,10 +53,12 @@
 #define X	%ecx
 #define I	%edx
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FMOV	fcmovbe
-#else
+#elif defined(USE_MIN)
 #define FMOV	fcmovnbe
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86/zamax_sse.S b/kernel/x86/zamax_sse.S
index 49e1c9c4b..9b03dc862 100644
--- a/kernel/x86/zamax_sse.S
+++ b/kernel/x86/zamax_sse.S
@@ -55,9 +55,14 @@
 #define XX	%edi
 #define TEMP	%ebx
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxps	maxps
+#define maxss	maxss
+#elif defined(USE_MIN)
 #define maxps	minps
 #define maxss	minss
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #ifndef HAVE_SSE2
diff --git a/kernel/x86/zamax_sse2.S b/kernel/x86/zamax_sse2.S
index 83f5cb831..103b476aa 100644
--- a/kernel/x86/zamax_sse2.S
+++ b/kernel/x86/zamax_sse2.S
@@ -55,9 +55,14 @@
 #define XX	%edi
 #define TEMP	%ebx
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxpd	maxpd
+#define maxsd	maxsd
+#elif defined(USE_MIN)
 #define maxpd	minpd
 #define maxsd	minsd
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/amax.S b/kernel/x86_64/amax.S
index 0e9bf4db4..b5c6c3d72 100644
--- a/kernel/x86_64/amax.S
+++ b/kernel/x86_64/amax.S
@@ -44,10 +44,12 @@
 #define INCX	ARG3
 #define I	%rax
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FMOV	fcmovbe
-#else
+#elif defined(USE_MIN)
 #define FMOV	fcmovnbe
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/amax_atom.S b/kernel/x86_64/amax_atom.S
index 6164cb3e3..a8263a9ae 100644
--- a/kernel/x86_64/amax_atom.S
+++ b/kernel/x86_64/amax_atom.S
@@ -45,8 +45,12 @@
 
 #define I	%rax
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxsd	maxsd
+#elif defined(USE_MIN)
 #define maxsd	minsd
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/amax_sse.S b/kernel/x86_64/amax_sse.S
index 2349905d3..d814bf4e1 100644
--- a/kernel/x86_64/amax_sse.S
+++ b/kernel/x86_64/amax_sse.S
@@ -45,9 +45,14 @@
 
 #define I	%rax
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxps	maxps
+#define maxss	maxss
+#elif defined(USE_MIN)
 #define maxps	minps
 #define maxss	minss
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/amax_sse2.S b/kernel/x86_64/amax_sse2.S
index 44ddaba77..5d58353ee 100644
--- a/kernel/x86_64/amax_sse2.S
+++ b/kernel/x86_64/amax_sse2.S
@@ -45,9 +45,14 @@
 
 #define I	%rax
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxpd	maxpd
+#define maxsd	maxsd
+#elif defined(USE_MIN)
 #define maxpd	minpd
 #define maxsd	minsd
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/iamax.S b/kernel/x86_64/iamax.S
index 79e1bae1d..20dbb256e 100644
--- a/kernel/x86_64/iamax.S
+++ b/kernel/x86_64/iamax.S
@@ -47,12 +47,14 @@
 #define I	ARG4
 #define NUM	%r10
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FMOV	fcmovbe
 #define IMOV	cmovnbe
-#else
+#elif defined(USE_MIN)
 #define FMOV	fcmovnbe
 #define IMOV	cmovb
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/iamax_sse.S b/kernel/x86_64/iamax_sse.S
index d50c1699c..1dcc1f037 100644
--- a/kernel/x86_64/iamax_sse.S
+++ b/kernel/x86_64/iamax_sse.S
@@ -52,11 +52,14 @@
 #define XX	%r10
 #define	MM	%r11
 
+#if defined(USE_MAX)
 #define MAXPS	maxps
 #define MAXSS	maxss
-#ifdef USE_MIN
+#elif defined(USE_MIN)
 #define MAXPS	minps
 #define MAXSS	minss
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/iamax_sse2.S b/kernel/x86_64/iamax_sse2.S
index 6808f191b..110479d6c 100644
--- a/kernel/x86_64/iamax_sse2.S
+++ b/kernel/x86_64/iamax_sse2.S
@@ -48,9 +48,14 @@
 #define XX	%r10
 #define	MM	%r11
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxpd	maxpd
+#define maxsd	maxsd
+#elif defined(USE_MIN)
 #define maxpd	minpd
 #define maxsd	minsd
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/izamax.S b/kernel/x86_64/izamax.S
index c066acd62..0c669fdea 100644
--- a/kernel/x86_64/izamax.S
+++ b/kernel/x86_64/izamax.S
@@ -47,12 +47,14 @@
 #define NUM	%r10
 #define RET	%rax
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FMOV	fcmovbe
 #define IMOV	cmovnbe
-#else
+#elif defined(USE_MIN)
 #define FMOV	fcmovnb
 #define IMOV	cmovb
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/izamax_sse.S b/kernel/x86_64/izamax_sse.S
index e273b8cc6..949aa70d3 100644
--- a/kernel/x86_64/izamax_sse.S
+++ b/kernel/x86_64/izamax_sse.S
@@ -48,9 +48,14 @@
 #define XX	%r10
 #define	MM	%r11
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxps	maxps
+#define maxss	maxss
+#elif defined(USE_MIN)
 #define maxps	minps
 #define maxss	minss
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/izamax_sse2.S b/kernel/x86_64/izamax_sse2.S
index c656a652d..5a2acbd5d 100644
--- a/kernel/x86_64/izamax_sse2.S
+++ b/kernel/x86_64/izamax_sse2.S
@@ -48,9 +48,14 @@
 #define XX	%r10
 #define	MM	%r11
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxpd	maxpd
+#define maxsd	maxsd
+#elif defined(USE_MIN)
 #define maxpd	minpd
 #define maxsd	minsd
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/zamax.S b/kernel/x86_64/zamax.S
index 74e127e6c..1a058753d 100644
--- a/kernel/x86_64/zamax.S
+++ b/kernel/x86_64/zamax.S
@@ -44,10 +44,12 @@
 #define INCX	ARG3
 #define I	%rax
 
-#ifndef USE_MIN
+#if defined(USE_MAX)
 #define FMOV	fcmovbe
-#else
+#elif defined(USE_MIN)
 #define FMOV	fcmovnbe
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/zamax_atom.S b/kernel/x86_64/zamax_atom.S
index 8b4e144f0..1ee898067 100644
--- a/kernel/x86_64/zamax_atom.S
+++ b/kernel/x86_64/zamax_atom.S
@@ -45,8 +45,12 @@
 
 #define I	%rax
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxsd	maxsd
+#elif defined(USE_MIN)
 #define maxsd	minsd
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/zamax_sse.S b/kernel/x86_64/zamax_sse.S
index 5f8a1f1c6..43f8cf7be 100644
--- a/kernel/x86_64/zamax_sse.S
+++ b/kernel/x86_64/zamax_sse.S
@@ -45,9 +45,14 @@
 
 #define I	%rax
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxps	maxps
+#define maxss	maxss
+#elif defined(USE_MIN)
 #define maxps	minps
 #define maxss	minss
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"
diff --git a/kernel/x86_64/zamax_sse2.S b/kernel/x86_64/zamax_sse2.S
index bde290be9..75c4901d9 100644
--- a/kernel/x86_64/zamax_sse2.S
+++ b/kernel/x86_64/zamax_sse2.S
@@ -45,9 +45,14 @@
 
 #define I	%rax
 
-#ifdef USE_MIN
+#if defined(USE_MAX)
+#define maxpd	maxpd
+#define maxsd	maxsd
+#elif defined(USE_MIN)
 #define maxpd	minpd
 #define maxsd	minsd
+#else
+#error Neither USE_MAX nor USE_MIN is defined
 #endif
 
 #include "l1param.h"