Mercurial > hg > dmlib
annotate tests/fptest.c @ 866:49fc8d8a0b9c
Re-do some portability things.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Thu, 08 Jan 2015 03:41:35 +0200 |
| parents | b111cccf45fc |
| children | 5e1d67f33dec |
| rev | line source |
|---|---|
| 0 | 1 #include "dmlib.h" |
| 2 #include <stdio.h> | |
| 3 | |
| 4 #define FP_DW_SIZE 8 | |
| 5 #define FP_W0_SIZE 4 | |
| 6 | |
|
36
f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
7 void check(const char *str, DMFixedPoint v, Sint64 dw) |
| 0 | 8 { |
| 9 DMFixedPoint *q = (DMFixedPoint *) &dw; | |
| 10 | |
|
809
eba3b87f3f84
Add some separate macros for 64/32 precision fixed point types.
Matti Hamalainen <ccr@tnsp.org>
parents:
653
diff
changeset
|
11 printf("%-15s = ", str); FP_PRINTF64(v); printf("\n"); |
|
eba3b87f3f84
Add some separate macros for 64/32 precision fixed point types.
Matti Hamalainen <ccr@tnsp.org>
parents:
653
diff
changeset
|
12 printf("should be = "); FP_PRINTF64((*q)); printf("\n"); |
| 0 | 13 |
| 14 if (v.dw != dw) | |
| 15 { | |
| 16 printf("ERROR! A test value differs from expected!\n"); | |
| 17 exit(1); | |
| 18 } | |
| 19 } | |
| 20 | |
| 21 int main(int argc, char *argv[]) | |
| 22 { | |
| 23 int i; | |
| 24 DMFixedPoint a, b, delta; | |
| 25 char *s; | |
| 26 | |
| 27 (void) argc; | |
| 28 (void) argv; | |
| 29 | |
| 30 // Check host characteristics | |
| 31 switch (SDL_BYTEORDER) | |
| 32 { | |
| 33 case SDL_BIG_ENDIAN: s = "big endian"; break; | |
| 34 case SDL_LIL_ENDIAN: s = "little endian"; break; | |
| 35 default: s = "unknown?"; break; | |
| 36 } | |
| 37 | |
| 38 printf( | |
| 39 "SDL byte order = %s (%d)\n\n", s, SDL_BYTEORDER); | |
| 40 | |
| 41 printf( | |
|
866
49fc8d8a0b9c
Re-do some portability things.
Matti Hamalainen <ccr@tnsp.org>
parents:
864
diff
changeset
|
42 "sizeof(DMFixedPoint) = %" PRId64 " bytes\n" |
|
49fc8d8a0b9c
Re-do some portability things.
Matti Hamalainen <ccr@tnsp.org>
parents:
864
diff
changeset
|
43 "sizeof(DMFixedPoint.dw) = %" PRId64 " bytes (should be %d)\n" |
|
49fc8d8a0b9c
Re-do some portability things.
Matti Hamalainen <ccr@tnsp.org>
parents:
864
diff
changeset
|
44 "sizeof(DMFixedPoint.w[0]) = %" PRId64 " bytes (should be %d)\n", |
| 0 | 45 sizeof(a), sizeof(a.dw), FP_DW_SIZE, |
| 46 sizeof(a.w[0]), FP_W0_SIZE); | |
| 47 | |
| 48 if (sizeof(a.dw) != FP_DW_SIZE || sizeof(a.w[0]) != FP_W0_SIZE) | |
| 49 { | |
| 50 printf("ERROR! Some type sizes DO NOT MATCH!\n"); | |
| 51 return -1; | |
| 52 } | |
| 53 | |
| 54 // TEST #1 | |
| 55 printf("\nTEST #1: set initial values\n"); | |
| 56 FP_SETHL(a, 55, 0); | |
| 57 check("a", a, 0x0000003700000000ULL); | |
| 58 | |
| 59 FP_CONV(b, 178); | |
| 60 check("b", b, 0x00000000000000b2ULL); | |
| 61 | |
| 62 FP_DIV_R(delta, a, b); | |
| 63 check("delta", delta, 0x000000004f19e33cULL); | |
| 64 | |
| 65 // Test #2 | |
| 66 printf("\nTEST #2: 50 x (a + delta)\n"); | |
| 67 for (i = 0; i < 50; i++) | |
| 68 { | |
| 69 FP_ADD(a, delta); | |
| 70 } | |
| 71 check("a end", a, 0x00000046730e61b8ULL); | |
| 72 | |
| 73 | |
| 74 // Test #3 | |
| 75 printf("\nTEST #3: 50 x (a - delta)\n"); | |
| 76 for (i = 0; i < 50; i++) | |
| 77 { | |
| 78 FP_SUB(a, delta); | |
| 79 } | |
| 80 check("a end", a, 0x0000003700000000ULL); | |
| 81 | |
| 82 // Test #4 | |
| 83 printf("\nTEST #4: 5 x (a * delta)\n"); | |
| 84 for (i = 0; i < 5; i++) | |
| 85 { | |
| 86 FP_MUL(a, delta); | |
| 87 } | |
| 88 check("a end", a, 0xd644e40000000000ULL); | |
| 89 | |
| 90 // Test #5 | |
| 91 printf("\nTEST #4: 2 x (a / delta)\n"); | |
| 92 for (i = 0; i < 2; i++) | |
| 93 { | |
| 94 FP_DIV(a, delta); | |
| 95 } | |
| 96 check("a end", a, 8ULL); | |
| 97 | |
| 98 return 0; | |
| 99 } |