handle float special constant maximum

src/main/java/gov/nasa/pds/tools/validate/content/array/ArrayContentValidator.java

@@ -387,24 +387,31 @@ public static boolean isSpecialConstant(Number value, SpecialConstants constants
         comparison = ((BigInteger) value)
             .compareTo(SpecialConstantBitPatternTransforms.asBigInt(constants.getValidMaximum()));
       } else {
-        Long con = SpecialConstantBitPatternTransforms.asBigInt(constants.getValidMaximum()).longValue();
-        Long val = value.longValue();
-        if (value instanceof Double) {
-          val = Long.valueOf(Double.doubleToRawLongBits((Double)value));
-          if (con.equals (val)) {
-            matchEdge &= true;
-          } else {
-            comparison = ((Double)value).compareTo(Double.longBitsToDouble(con));
-          }
-        } else if (value instanceof Float) {
-          val = Long.valueOf(Float.floatToRawIntBits((Float)value)) & 0xFFFFFFFFL;
-          if (con.equals (val)) {
-            matchEdge &= true;
+        if (constants.getValidMaximum().contains(".") || 
+            ((constants.getValidMaximum().contains("e") || constants.getValidMaximum().contains("E")) && 
+                !(constants.getValidMaximum().startsWith("0x") || constants.getValidMaximum().startsWith("0X") || constants.getValidMaximum().startsWith("16#")))) {
+          comparison = Double.valueOf(value.doubleValue())
+              .compareTo(SpecialConstantBitPatternTransforms.asBigDecimal(constants.getValidMaximum()).doubleValue());
+        } else {
+          Long con = SpecialConstantBitPatternTransforms.asBigInt(constants.getValidMaximum()).longValue();
+          Long val = value.longValue();
+          if (value instanceof Double) {
+            val = Long.valueOf(Double.doubleToRawLongBits((Double)value));
+            if (con.equals (val)) {
+              matchEdge &= true;
+            } else {
+              comparison = ((Double)value).compareTo(Double.longBitsToDouble(con));
+            }
+          } else if (value instanceof Float) {
+            val = Long.valueOf(Float.floatToRawIntBits((Float)value)) & 0xFFFFFFFFL;
+            if (con.equals (val)) {
+              matchEdge &= true;
+            } else {
+              comparison = ((Float)value).compareTo(Float.intBitsToFloat(con.intValue()));
+            }
           } else {
-            comparison = ((Float)value).compareTo(Float.intBitsToFloat(con.intValue()));
+            comparison = val.compareTo(con);
           }
-        } else {
-          comparison = val.compareTo(con);
         }
       }
       if (0 < comparison) {

src/test/resources/features/developer.feature

@@ -9,6 +9,10 @@ Scenario Outline: Execute validate command for tests below.
   Examples:
  | testName                                             | testDir     | messageCount | messageText         | problemEnum     | resourceDir          | reportDir     | commandArgs                                                                | refOutputValue | 
 
+
+# Validate#823
+|"NASA-PDS/validate#823 Success process problematic floats" | "github823" | 0 | "0 errors expected" | "totalErrors" | "src/test/resources"   | "target/test" | "-r {reportDir}/report_github823.json -s json --skip-context-validation  -t {resourceDir}/github823/mvn_swi_l2_onboardsvymom_20230827_v02_r01.xml" | "report_github823.json" |
+
 # Validate#785
 |"NASA-PDS/validate#785 Success detecting out of range values" | "github785" | 6 | "6 warnings expected" | "FIELD_VALUE_OUT_OF_SPECIAL_CONSTANT_MIN_MAX_RANGE" | "src/test/resources"   | "target/test" | "-r {reportDir}/report_github785.json -s json --skip-context-validation  -t {resourceDir}/github785/00038_FGM_RTN.xml" | "report_github785.json" |