Mercurial > hg > dmlib
view fptest.c @ 510:43ea59887c69
Start work on making C64 formats encoding possible by changing DMDecodeOps
to DMEncDecOps and adding fields and op enums for custom encode functions, renaming,
etc. Split generic op sanity checking into a separate function in
preparation for its use in generic encoding function.
author | Matti Hamalainen <ccr@tnsp.org> |
---|---|
date | Mon, 19 Nov 2012 15:06:01 +0200 |
parents | f3407a58e01e |
children |
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#include "dmlib.h" #include <stdio.h> #define FP_DW_SIZE 8 #define FP_W0_SIZE 4 void check(const char *str, DMFixedPoint v, Sint64 dw) { DMFixedPoint *q = (DMFixedPoint *) &dw; printf("%-15s = ", str); FP_PRINTF(v); printf("\n"); printf("should be = "); FP_PRINTF((*q)); printf("\n"); if (v.dw != dw) { printf("ERROR! A test value differs from expected!\n"); exit(1); } } int main(int argc, char *argv[]) { int i; DMFixedPoint a, b, delta; char *s; (void) argc; (void) argv; // Check host characteristics switch (SDL_BYTEORDER) { case SDL_BIG_ENDIAN: s = "big endian"; break; case SDL_LIL_ENDIAN: s = "little endian"; break; default: s = "unknown?"; break; } printf( "SDL byte order = %s (%d)\n\n", s, SDL_BYTEORDER); printf( "sizeof(DMFixedPoint) = %d bytes\n" "sizeof(DMFixedPoint.dw = %d bytes (should be %d)\n" "sizeof(DMFixedPoint.w[0] = %d bytes (should be %d)\n", sizeof(a), sizeof(a.dw), FP_DW_SIZE, sizeof(a.w[0]), FP_W0_SIZE); if (sizeof(a.dw) != FP_DW_SIZE || sizeof(a.w[0]) != FP_W0_SIZE) { printf("ERROR! Some type sizes DO NOT MATCH!\n"); return -1; } // TEST #1 printf("\nTEST #1: set initial values\n"); FP_SETHL(a, 55, 0); check("a", a, 0x0000003700000000ULL); FP_CONV(b, 178); check("b", b, 0x00000000000000b2ULL); FP_DIV_R(delta, a, b); check("delta", delta, 0x000000004f19e33cULL); // Test #2 printf("\nTEST #2: 50 x (a + delta)\n"); for (i = 0; i < 50; i++) { FP_ADD(a, delta); } check("a end", a, 0x00000046730e61b8ULL); // Test #3 printf("\nTEST #3: 50 x (a - delta)\n"); for (i = 0; i < 50; i++) { FP_SUB(a, delta); } check("a end", a, 0x0000003700000000ULL); // Test #4 printf("\nTEST #4: 5 x (a * delta)\n"); for (i = 0; i < 5; i++) { FP_MUL(a, delta); } check("a end", a, 0xd644e40000000000ULL); // Test #5 printf("\nTEST #4: 2 x (a / delta)\n"); for (i = 0; i < 2; i++) { FP_DIV(a, delta); } check("a end", a, 8ULL); return 0; }