Mercurial > sdl-ios-xcode
view test/testplatform.c @ 3496:78fc8ea578b2
Joe 2009-11-23 21:31:10 PST
If type is ::SDL_HAPTIC_CARTESIAN, direction is encoded by three positions
367 * (X axis, Y axis and Z axis (with 3 axes)). ::SDL_HAPTIC_CARTESIAN
uses
368 * the first three \c dir parameters. The cardinal directions would
be:
369 * - North: 0,-1, 0
370 * - East: -1, 0, 0
371 * - South: 0, 1, 0
372 * - West: 1, 0, 0
typedef struct SDL_HapticDirection
{
Uint8 type; /**< The type of encoding. */
Uint16 dir[3]; /**< The encoded direction. */
} SDL_HapticDirection;
An unsigned int can't store negative values and I don't see an alternate way to
encode them in the docs or source. The best I have been able to come up with is
using a negative magnitude for the effect but this will only get me 2 of the 4
quadrants in the plane for 2d effects. I looked at the win32 and linux
implementations and I believe is is safe to use signed ints in the direction
struct. I am unfamiliar with the darwin haptics API so I don't know if it is
safe.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 27 Nov 2009 19:29:27 +0000 |
parents | 63d4517fc4ac |
children | 3427271a2d75 |
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#include <stdio.h> #include "SDL.h" #include "SDL_endian.h" #include "SDL_cpuinfo.h" /* * Watcom C flags these as Warning 201: "Unreachable code" if you just * compare them directly, so we push it through a function to keep the * compiler quiet. --ryan. */ static int badsize(size_t sizeoftype, size_t hardcodetype) { return sizeoftype != hardcodetype; } int TestTypes(SDL_bool verbose) { int error = 0; if (badsize(sizeof(Uint8), 1)) { if (verbose) printf("sizeof(Uint8) != 1, instead = %lu\n", sizeof(Uint8)); ++error; } if (badsize(sizeof(Uint16), 2)) { if (verbose) printf("sizeof(Uint16) != 2, instead = %lu\n", sizeof(Uint16)); ++error; } if (badsize(sizeof(Uint32), 4)) { if (verbose) printf("sizeof(Uint32) != 4, instead = %lu\n", sizeof(Uint32)); ++error; } #ifdef SDL_HAS_64BIT_TYPE if (badsize(sizeof(Uint64), 8)) { if (verbose) printf("sizeof(Uint64) != 8, instead = %lu\n", sizeof(Uint64)); ++error; } #else if (verbose) { printf("WARNING: No 64-bit datatype on this platform\n"); } #endif if (verbose && !error) printf("All data types are the expected size.\n"); return (error ? 1 : 0); } int TestEndian(SDL_bool verbose) { int error = 0; Uint16 value = 0x1234; int real_byteorder; Uint16 value16 = 0xCDAB; Uint16 swapped16 = 0xABCD; Uint32 value32 = 0xEFBEADDE; Uint32 swapped32 = 0xDEADBEEF; #ifdef SDL_HAS_64BIT_TYPE Uint64 value64, swapped64; value64 = 0xEFBEADDE; value64 <<= 32; value64 |= 0xCDAB3412; swapped64 = 0x1234ABCD; swapped64 <<= 32; swapped64 |= 0xDEADBEEF; #endif if (verbose) { printf("Detected a %s endian machine.\n", (SDL_BYTEORDER == SDL_LIL_ENDIAN) ? "little" : "big"); } if ((*((char *) &value) >> 4) == 0x1) { real_byteorder = SDL_BIG_ENDIAN; } else { real_byteorder = SDL_LIL_ENDIAN; } if (real_byteorder != SDL_BYTEORDER) { if (verbose) { printf("Actually a %s endian machine!\n", (real_byteorder == SDL_LIL_ENDIAN) ? "little" : "big"); } ++error; } if (verbose) { printf("Value 16 = 0x%X, swapped = 0x%X\n", value16, SDL_Swap16(value16)); } if (SDL_Swap16(value16) != swapped16) { if (verbose) { printf("16 bit value swapped incorrectly!\n"); } ++error; } if (verbose) { printf("Value 32 = 0x%X, swapped = 0x%X\n", value32, SDL_Swap32(value32)); } if (SDL_Swap32(value32) != swapped32) { if (verbose) { printf("32 bit value swapped incorrectly!\n"); } ++error; } #ifdef SDL_HAS_64BIT_TYPE if (verbose) { #ifdef _MSC_VER printf("Value 64 = 0x%I64X, swapped = 0x%I64X\n", value64, SDL_Swap64(value64)); #else printf("Value 64 = 0x%llX, swapped = 0x%llX\n", value64, SDL_Swap64(value64)); #endif } if (SDL_Swap64(value64) != swapped64) { if (verbose) { printf("64 bit value swapped incorrectly!\n"); } ++error; } #endif return (error ? 1 : 0); } int TestCPUInfo(SDL_bool verbose) { if (verbose) { printf("RDTSC %s\n", SDL_HasRDTSC()? "detected" : "not detected"); printf("MMX %s\n", SDL_HasMMX()? "detected" : "not detected"); printf("MMX Ext %s\n", SDL_HasMMXExt()? "detected" : "not detected"); printf("3DNow %s\n", SDL_Has3DNow()? "detected" : "not detected"); printf("3DNow Ext %s\n", SDL_Has3DNowExt()? "detected" : "not detected"); printf("SSE %s\n", SDL_HasSSE()? "detected" : "not detected"); printf("SSE2 %s\n", SDL_HasSSE2()? "detected" : "not detected"); printf("AltiVec %s\n", SDL_HasAltiVec()? "detected" : "not detected"); } return (0); } int main(int argc, char *argv[]) { SDL_bool verbose = SDL_TRUE; int status = 0; if (argv[1] && (SDL_strcmp(argv[1], "-q") == 0)) { verbose = SDL_FALSE; } if (verbose) { printf("This system is running %s\n", SDL_GetPlatform()); } status += TestTypes(verbose); status += TestEndian(verbose); status += TestCPUInfo(verbose); return status; }