Commit a225ffc1d79e6302970cd9ec364ac8d106d792a4
2017-10-16T14:39:56
Added min/max macros for the sized SDL datatypes
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diff --git a/include/SDL_stdinc.h b/include/SDL_stdinc.h
index f7ac33a..7240229 100644
--- a/include/SDL_stdinc.h
+++ b/include/SDL_stdinc.h
@@ -146,35 +146,51 @@ typedef enum
/**
* \brief A signed 8-bit integer type.
*/
+#define SDL_MAX_SINT8 ((Sint8)0x7F) /* 127 */
+#define SDL_MIN_SINT8 ((Sint8)(~0x7F)) /* -128 */
typedef int8_t Sint8;
/**
* \brief An unsigned 8-bit integer type.
*/
+#define SDL_MAX_UINT8 ((Uint8)0xFF) /* 255 */
+#define SDL_MIN_UINT8 ((Uint8)0x00) /* 0 */
typedef uint8_t Uint8;
/**
* \brief A signed 16-bit integer type.
*/
+#define SDL_MAX_SINT16 ((Sint16)0x7FFF) /* 32767 */
+#define SDL_MIN_SINT16 ((Sint16)(~0x7FFF)) /* -32768 */
typedef int16_t Sint16;
/**
* \brief An unsigned 16-bit integer type.
*/
+#define SDL_MAX_UINT16 ((Uint16)0xFFFF) /* 65535 */
+#define SDL_MIN_UINT16 ((Uint16)0x0000) /* 0 */
typedef uint16_t Uint16;
/**
* \brief A signed 32-bit integer type.
*/
+#define SDL_MAX_SINT32 ((Sint32)0x7FFFFFFF) /* 2147483647 */
+#define SDL_MIN_SINT32 ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */
typedef int32_t Sint32;
/**
* \brief An unsigned 32-bit integer type.
*/
+#define SDL_MAX_UINT32 ((Uint32)0xFFFFFFFFu) /* 4294967295 */
+#define SDL_MIN_UINT32 ((Uint32)0x00000000) /* 0 */
typedef uint32_t Uint32;
/**
* \brief A signed 64-bit integer type.
*/
+#define SDL_MAX_SINT64 ((Sint64)0x7FFFFFFFFFFFFFFFll) /* 9223372036854775807 */
+#define SDL_MIN_SINT64 ((Sint64)(~0x7FFFFFFFFFFFFFFFll)) /* -9223372036854775808 */
typedef int64_t Sint64;
/**
* \brief An unsigned 64-bit integer type.
*/
+#define SDL_MAX_UINT64 ((Uint64)0xFFFFFFFFFFFFFFFFull) /* 18446744073709551615 */
+#define SDL_MIN_UINT64 ((Uint64)(0x0000000000000000ull)) /* 0 */
typedef uint64_t Uint64;
/* @} *//* Basic data types */
diff --git a/test/testplatform.c b/test/testplatform.c
index 001123b..0cba8fe 100644
--- a/test/testplatform.c
+++ b/test/testplatform.c
@@ -30,6 +30,26 @@ TestTypes(SDL_bool verbose)
{
int error = 0;
+ SDL_COMPILE_TIME_ASSERT(SDL_MAX_SINT8, SDL_MAX_SINT8 == 127);
+ SDL_COMPILE_TIME_ASSERT(SDL_MIN_SINT8, SDL_MIN_SINT8 == -128);
+ SDL_COMPILE_TIME_ASSERT(SDL_MAX_UINT8, SDL_MAX_UINT8 == 255);
+ SDL_COMPILE_TIME_ASSERT(SDL_MIN_UINT8, SDL_MIN_UINT8 == 0);
+
+ SDL_COMPILE_TIME_ASSERT(SDL_MAX_SINT16, SDL_MAX_SINT16 == 32767);
+ SDL_COMPILE_TIME_ASSERT(SDL_MIN_SINT16, SDL_MIN_SINT16 == -32768);
+ SDL_COMPILE_TIME_ASSERT(SDL_MAX_UINT16, SDL_MAX_UINT16 == 65535);
+ SDL_COMPILE_TIME_ASSERT(SDL_MIN_UINT16, SDL_MIN_UINT16 == 0);
+
+ SDL_COMPILE_TIME_ASSERT(SDL_MAX_SINT32, SDL_MAX_SINT32 == 2147483647);
+ SDL_COMPILE_TIME_ASSERT(SDL_MIN_SINT32, SDL_MIN_SINT32 == ~0x7fffffff); /* Instead of -2147483648, which is treated as unsigned by some compilers */
+ SDL_COMPILE_TIME_ASSERT(SDL_MAX_UINT32, SDL_MAX_UINT32 == 4294967295u);
+ SDL_COMPILE_TIME_ASSERT(SDL_MIN_UINT32, SDL_MIN_UINT32 == 0);
+
+ SDL_COMPILE_TIME_ASSERT(SDL_MAX_SINT64, SDL_MAX_SINT64 == 9223372036854775807ll);
+ SDL_COMPILE_TIME_ASSERT(SDL_MIN_SINT64, SDL_MIN_SINT64 == ~0x7fffffffffffffffll); /* Instead of -9223372036854775808, which is treated as unsigned by compilers */
+ SDL_COMPILE_TIME_ASSERT(SDL_MAX_UINT64, SDL_MAX_UINT64 == 18446744073709551615ull);
+ SDL_COMPILE_TIME_ASSERT(SDL_MIN_UINT64, SDL_MIN_UINT64 == 0);
+
if (badsize(sizeof(Uint8), 1)) {
if (verbose)
SDL_Log("sizeof(Uint8) != 1, instead = %u\n",