diff --git a/apps/probability/law/exponential_law.cpp b/apps/probability/law/exponential_law.cpp
index f6a93b3a3..dd197ff23 100644
--- a/apps/probability/law/exponential_law.cpp
+++ b/apps/probability/law/exponential_law.cpp
@@ -69,7 +69,7 @@ float ExponentialLaw::cumulativeDistributiveFunctionAtAbscissa(float x) const {
 
 float ExponentialLaw::cumulativeDistributiveInverseForProbability(float * probability) {
   if (*probability >= 1.0f) {
-    return FLT_MAX+1.0f;
+    return INFINITY;
   }
   if (*probability <= 0.0f) {
     return 0.0f;
diff --git a/apps/probability/law/law.cpp b/apps/probability/law/law.cpp
index acdc90041..ae75b25fe 100644
--- a/apps/probability/law/law.cpp
+++ b/apps/probability/law/law.cpp
@@ -58,7 +58,7 @@ float Law::finiteIntegralBetweenAbscissas(float a, float b) const {
 
 float Law::cumulativeDistributiveInverseForProbability(float * probability) {
   if (*probability >= 1.0f) {
-    return FLT_MAX+1.0f;
+    return INFINITY;
   }
   if (!isContinuous()) {
     if (*probability <= 0.0f) {
diff --git a/apps/probability/law/normal_law.cpp b/apps/probability/law/normal_law.cpp
index 676439561..20eba841e 100644
--- a/apps/probability/law/normal_law.cpp
+++ b/apps/probability/law/normal_law.cpp
@@ -106,10 +106,10 @@ float NormalLaw::standardNormalCumulativeDistributiveFunctionAtAbscissa(float ab
 
 float NormalLaw::standardNormalCumulativeDistributiveInverseForProbability(float probability) {
   if (probability >= 1.0f) {
-    return FLT_MAX+1.0f;
+    return INFINITY;
   }
   if (probability <= 0.0f) {
-    return -FLT_MAX-1.0f;
+    return -INFINITY;
   }
   if (probability < 0.5f) {
     return -standardNormalCumulativeDistributiveInverseForProbability(1-probability);
diff --git a/liba/include/math.h b/liba/include/math.h
index 5495a952e..293a8b5b4 100644
--- a/liba/include/math.h
+++ b/liba/include/math.h
@@ -6,6 +6,8 @@
 LIBA_BEGIN_DECLS
 
 #define NAN (0.0f/0.0f)
+#define HUGE_VALF 1e50f
+#define INFINITY HUGE_VALF
 #define M_E 2.71828182845904523536028747135266250
 #define M_PI 3.14159265358979323846264338327950288