diff --git a/cimgui.cpp b/cimgui.cpp
index 30a8ed9..15791ad 100644
--- a/cimgui.cpp
+++ b/cimgui.cpp
@@ -4307,6 +4307,11 @@ CIMGUI_API float igGET_FLT_MAX()
     return FLT_MAX;
 }
 
+CIMGUI_API float igGET_FLT_MIN()
+{
+    return FLT_MIN;
+}
+
 
 CIMGUI_API ImVector_ImWchar* ImVector_ImWchar_create()
 {
diff --git a/cimgui.h b/cimgui.h
index d6de4f6..bf1eb72 100644
--- a/cimgui.h
+++ b/cimgui.h
@@ -3307,6 +3307,8 @@ CIMGUI_API void igLogText(CONST char *fmt, ...);
 CIMGUI_API void ImGuiTextBuffer_appendf(struct ImGuiTextBuffer *buffer, const char *fmt, ...);
 //for getting FLT_MAX in bindings
 CIMGUI_API float igGET_FLT_MAX();
+//for getting FLT_MIN in bindings
+CIMGUI_API float igGET_FLT_MIN();
 
 
 CIMGUI_API ImVector_ImWchar* ImVector_ImWchar_create();
diff --git a/generator/cimgui_template.cpp b/generator/cimgui_template.cpp
index c6b2ffa..ef981e0 100644
--- a/generator/cimgui_template.cpp
+++ b/generator/cimgui_template.cpp
@@ -35,6 +35,11 @@ CIMGUI_API float igGET_FLT_MAX()
     return FLT_MAX;
 }
 
+CIMGUI_API float igGET_FLT_MIN()
+{
+    return FLT_MIN;
+}
+
 
 CIMGUI_API ImVector_ImWchar* ImVector_ImWchar_create()
 {
diff --git a/generator/cimgui_template.h b/generator/cimgui_template.h
index 6d5e879..73c483a 100644
--- a/generator/cimgui_template.h
+++ b/generator/cimgui_template.h
@@ -55,6 +55,8 @@ CIMGUI_API void igLogText(CONST char *fmt, ...);
 CIMGUI_API void ImGuiTextBuffer_appendf(struct ImGuiTextBuffer *buffer, const char *fmt, ...);
 //for getting FLT_MAX in bindings
 CIMGUI_API float igGET_FLT_MAX();
+//for getting FLT_MIN in bindings
+CIMGUI_API float igGET_FLT_MIN();
 
 
 CIMGUI_API ImVector_ImWchar* ImVector_ImWchar_create();
diff --git a/generator/generator.lua b/generator/generator.lua
index 7863010..670a419 100644
--- a/generator/generator.lua
+++ b/generator/generator.lua
@@ -168,13 +168,16 @@ local function get_defines(t)
     end
     return ret
 end
-  --subtitution of FLT_MAX value for FLT_MAX 
+  --subtitution of FLT_MAX value for FLT_MAX or FLT_MIN
 local function set_defines(fdefs)
+	local FLT_MINpat = gdefines.FLT_MIN:gsub("([%.%-])","%%%1")
     for k,defT in pairs(fdefs) do
         for i,def in ipairs(defT) do
             for name,default in pairs(def.defaults) do
                 if default == gdefines.FLT_MAX then
                     def.defaults[name] = "FLT_MAX"
+                elseif default:match(FLT_MINpat) then
+                    def.defaults[name] = default:gsub(FLT_MINpat,"FLT_MIN")
                 end
             end
         end
@@ -330,7 +333,7 @@ end
 --------------------------------------------------------
 --get imgui.h version and IMGUI_HAS_DOCK--------------------------
 --get some defines wont work for cl ----------------
-gdefines = get_defines{"IMGUI_VERSION","FLT_MAX","IMGUI_HAS_DOCK"}
+gdefines = get_defines{"IMGUI_VERSION","FLT_MAX","FLT_MIN","IMGUI_HAS_DOCK"}
 --this will work for cl
 local pipe,err = io.open("../imgui/imgui.h","r")
 if not pipe then
diff --git a/generator/output/definitions.json b/generator/output/definitions.json
index 9be504f..acf914e 100644
--- a/generator/output/definitions.json
+++ b/generator/output/definitions.json
@@ -23163,7 +23163,7 @@
       "cimguiname": "igProgressBar",
       "defaults": {
         "overlay": "NULL",
-        "size_arg": "ImVec2(-1.17549435082228750796873653722224568e-38F,0)"
+        "size_arg": "ImVec2(-FLT_MIN,0)"
       },
       "funcname": "ProgressBar",
       "location": "imgui:469",
diff --git a/generator/output/definitions.lua b/generator/output/definitions.lua
index 0841661..15475ae 100644
--- a/generator/output/definitions.lua
+++ b/generator/output/definitions.lua
@@ -19615,7 +19615,7 @@ defs["igProgressBar"][1]["call_args"] = "(fraction,size_arg,overlay)"
 defs["igProgressBar"][1]["cimguiname"] = "igProgressBar"
 defs["igProgressBar"][1]["defaults"] = {}
 defs["igProgressBar"][1]["defaults"]["overlay"] = "NULL"
-defs["igProgressBar"][1]["defaults"]["size_arg"] = "ImVec2(-1.17549435082228750796873653722224568e-38F,0)"
+defs["igProgressBar"][1]["defaults"]["size_arg"] = "ImVec2(-FLT_MIN,0)"
 defs["igProgressBar"][1]["funcname"] = "ProgressBar"
 defs["igProgressBar"][1]["location"] = "imgui:469"
 defs["igProgressBar"][1]["namespace"] = "ImGui"