Refine code.

[mirror_edk2.git] / MdePkg / Library / BaseLib / String.c

diff --git a/MdePkg/Library/BaseLib/String.c b/MdePkg/Library/BaseLib/String.c
index 2279720951f347bedf65ac529bb3205b5c1cdecc..273291a915b281ce1eebeaa611b63074da2a9a24 100644 (file)
--- a/MdePkg/Library/BaseLib/String.c
+++ b/MdePkg/Library/BaseLib/String.c
@@ -14,17 +14,6 @@
 \r
 #include "BaseLibInternals.h"\r
 \r
-#define QUOTIENT_MAX_UINTN_DIVIDED_BY_10      ((UINTN) -1 / 10)\r
-#define REMAINDER_MAX_UINTN_DIVIDED_BY_10    ((UINTN) -1 % 10)\r
-\r
-#define QUOTIENT_MAX_UINTN_DIVIDED_BY_16      ((UINTN) -1 / 16)\r
-#define REMAINDER_MAX_UINTN_DIVIDED_BY_16    ((UINTN) -1 % 16)\r
-\r
-#define QUOTIENT_MAX_UINT64_DIVIDED_BY_10      ((UINT64) -1 / 10)\r
-#define REMAINDER_MAX_UINT64_DIVIDED_BY_10    ((UINT64) -1 % 10)\r
-\r
-#define QUOTIENT_MAX_UINT64_DIVIDED_BY_16      ((UINT64) -1 / 16)\r
-#define REMAINDER_MAX_UINT64_DIVIDED_BY_16    ((UINT64) -1 % 16)\r
 \r
 /**\r
   Copies one Null-terminated Unicode string to another Null-terminated Unicode\r
@@ -681,10 +670,7 @@ StrDecimalToUintn (
     // If the number represented by String overflows according \r
     // to the range defined by UINTN, then ASSERT().\r
     //\r
-    ASSERT ((Result < QUOTIENT_MAX_UINTN_DIVIDED_BY_10) ||\r
-      ((Result == QUOTIENT_MAX_UINTN_DIVIDED_BY_10) &&\r
-      (*String - L'0') <= REMAINDER_MAX_UINTN_DIVIDED_BY_10)\r
-      );\r
+    ASSERT (Result <= ((((UINTN) ~0) - (*String - L'0')) / 10));\r
 \r
     Result = Result * 10 + (*String - L'0');\r
     String++;\r
@@ -763,10 +749,7 @@ StrDecimalToUint64 (
     // If the number represented by String overflows according \r
     // to the range defined by UINTN, then ASSERT().\r
     //\r
-    ASSERT ((Result < QUOTIENT_MAX_UINT64_DIVIDED_BY_10) || \r
-      ((Result == QUOTIENT_MAX_UINT64_DIVIDED_BY_10) && \r
-      (*String - L'0') <= REMAINDER_MAX_UINT64_DIVIDED_BY_10)\r
-      );\r
+    ASSERT (Result <= DivU64x32 (((UINT64) ~0) - (*String - L'0') , 10));\r
 \r
     Result = MultU64x32 (Result, 10) + (*String - L'0');\r
     String++;\r
@@ -855,10 +838,7 @@ StrHexToUintn (
     // If the Hex Number represented by String overflows according \r
     // to the range defined by UINTN, then ASSERT().\r
     //\r
-    ASSERT ((Result < QUOTIENT_MAX_UINTN_DIVIDED_BY_16) ||\r
-      ((Result == QUOTIENT_MAX_UINTN_DIVIDED_BY_16) && \r
-      (InternalHexCharToUintn (*String) <= REMAINDER_MAX_UINTN_DIVIDED_BY_16))\r
-      );\r
+    ASSERT (Result <= ((((UINTN) ~0) - InternalHexCharToUintn (*String)) >> 4));\r
 \r
     Result = (Result << 4) + InternalHexCharToUintn (*String);\r
     String++;\r
@@ -949,10 +929,7 @@ StrHexToUint64 (
     // If the Hex Number represented by String overflows according \r
     // to the range defined by UINTN, then ASSERT().\r
     //\r
-    ASSERT ((Result < QUOTIENT_MAX_UINT64_DIVIDED_BY_16)|| \r
-      ((Result == QUOTIENT_MAX_UINT64_DIVIDED_BY_16) && \r
-      (InternalHexCharToUintn (*String) <= REMAINDER_MAX_UINT64_DIVIDED_BY_16))\r
-      );\r
+    ASSERT (Result <= RShiftU64 (((UINT64) ~0) - InternalHexCharToUintn (*String) , 4));\r
 \r
     Result = LShiftU64 (Result, 4);\r
     Result = Result + InternalHexCharToUintn (*String);\r
@@ -1716,10 +1693,7 @@ AsciiStrDecimalToUintn (
     // If the number represented by String overflows according \r
     // to the range defined by UINTN, then ASSERT().\r
     //\r
-    ASSERT ((Result < QUOTIENT_MAX_UINTN_DIVIDED_BY_10) ||\r
-      ((Result == QUOTIENT_MAX_UINTN_DIVIDED_BY_10) && \r
-      (*String - '0') <= REMAINDER_MAX_UINTN_DIVIDED_BY_10)\r
-      );\r
+    ASSERT (Result <= ((((UINTN) ~0) - (*String - L'0')) / 10));\r
 \r
     Result = Result * 10 + (*String - '0');\r
     String++;\r
@@ -1793,10 +1767,7 @@ AsciiStrDecimalToUint64 (
     // If the number represented by String overflows according \r
     // to the range defined by UINTN, then ASSERT().\r
     //\r
-    ASSERT ((Result < QUOTIENT_MAX_UINT64_DIVIDED_BY_10) || \r
-      ((Result == QUOTIENT_MAX_UINT64_DIVIDED_BY_10) && \r
-      (*String - '0') <= REMAINDER_MAX_UINT64_DIVIDED_BY_10)\r
-      );\r
+    ASSERT (Result <= DivU64x32 (((UINT64) ~0) - (*String - L'0') , 10));\r
 \r
     Result = MultU64x32 (Result, 10) + (*String - '0');\r
     String++;\r
@@ -1884,10 +1855,7 @@ AsciiStrHexToUintn (
     // If the Hex Number represented by String overflows according \r
     // to the range defined by UINTN, then ASSERT().\r
     //\r
-     ASSERT ((Result < QUOTIENT_MAX_UINTN_DIVIDED_BY_16) ||\r
-       ((Result == QUOTIENT_MAX_UINTN_DIVIDED_BY_16) && \r
-       (InternalAsciiHexCharToUintn (*String) <= REMAINDER_MAX_UINTN_DIVIDED_BY_16))\r
-       );\r
+    ASSERT (Result <= ((((UINTN) ~0) - InternalHexCharToUintn (*String)) >> 4));\r
 \r
     Result = (Result << 4) + InternalAsciiHexCharToUintn (*String);\r
     String++;\r
@@ -1979,10 +1947,7 @@ AsciiStrHexToUint64 (
     // If the Hex Number represented by String overflows according \r
     // to the range defined by UINTN, then ASSERT().\r
     //\r
-    ASSERT ((Result < QUOTIENT_MAX_UINT64_DIVIDED_BY_16) ||\r
-      ((Result == QUOTIENT_MAX_UINT64_DIVIDED_BY_16) && \r
-      (InternalAsciiHexCharToUintn (*String) <= REMAINDER_MAX_UINT64_DIVIDED_BY_16))\r
-      );\r
+    ASSERT (Result <= RShiftU64 (((UINT64) ~0) - InternalHexCharToUintn (*String) , 4));\r
 \r
     Result = LShiftU64 (Result, 4);\r
     Result = Result + InternalAsciiHexCharToUintn (*String);\r