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127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
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// test basic arithmetic operations
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#ifdef CONIO
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#include <conio.h>
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#define WAIT() cgetc()
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#else
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#define WAIT()
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <_float.h>
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float fp1 = 12.34f;
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float fp2; // non initialized
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float fp3, fp4 = 55.55f;
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char buf[0x20];
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char buf2[0x20];
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char buf3[0x20];
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unsigned long l1,l2;
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signed char var_schar;
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unsigned char var_uchar;
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signed int var_sint;
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unsigned int var_uint;
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signed long var_slong;
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unsigned long var_ulong;
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int result = 0;
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// returns 1 if value in f matches the string
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// the string is a hex value without leading "0x"
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int compare(float f, char *str)
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{
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char temp[12];
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sprintf(temp, "%08lx", *((uint32_t*)&f));
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return (strcmp(temp, str) == 0) ? 1 : 0;
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}
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void test1(float f, char *str)
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{
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if (compare(f, str)) {
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// printf(" (ok)");
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printf("\n");
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} else {
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printf(" (failed) !!!\n");
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result++;
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}
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}
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void constconst(void)
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{
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printf("\n*** constant vs constant\n\n");
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// addition
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printf("\nconstant + constant\n\n");
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fp1 = 0.1f;
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fp2 = 0.2f;
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fp3 = 0.1f + 0.2f;
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printf(" 0x%08lx [0x3dcccccd] %s (0.1)\n", *((uint32_t*)&fp1), _ftostr(buf, fp1));
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printf(" 0x%08lx [0x3e4ccccd] %s (0.2)\n", *((uint32_t*)&fp2), _ftostr(buf, fp2));
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printf("fp3:0x%08lx [0x3e99999a] %s (0.3)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "3e99999a");
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// substraction
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printf("\nconstant - constant\n\n");
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fp1 = 0.1f;
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fp2 = 0.2f;
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fp3 = 0.1f - 0.2f;
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printf(" 0x%08lx [0x3dcccccd] %s (0.1)\n", *((uint32_t*)&fp1), _ftostr(buf, fp1));
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printf(" 0x%08lx [0x3e4ccccd] %s (0.2)\n", *((uint32_t*)&fp2), _ftostr(buf, fp2));
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printf("fp3:0x%08lx [0xbdcccccd] %s (-0.1)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "bdcccccd");
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fp3 = 0.3f - 0.1f;
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printf("fp3:0x%08lx [0x3e4ccccd] %s (0.2)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "3e4ccccd");
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fp3 = 0.1f - 0.3f;
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printf("fp3:0x%08lx [0xbe4ccccd] %s (-0.2)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "be4ccccd");
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// multiplication
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printf("\nconstant * constant\n\n");
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fp1 = 0.1f;
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fp2 = 0.2f;
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fp3 = 0.1f * 5.0f;
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printf(" 0x%08lx [0x3dcccccd] %s (0.1)\n", *((uint32_t*)&fp1), _ftostr(buf, fp1));
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printf(" 0x%08lx [0x3e4ccccd] %s (0.2)\n", *((uint32_t*)&fp2), _ftostr(buf, fp2));
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printf("fp3:0x%08lx [0x3f000000] %s (0.5)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "3f000000");
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// division
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printf("\nconstant / constant\n\n");
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fp1 = 0.1f;
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fp2 = 0.2f;
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fp3 = 0.1f / 0.2f;
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printf(" 0x%08lx [0x3dcccccd] %s (0.1)\n", *((uint32_t*)&fp1), _ftostr(buf, fp1));
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printf(" 0x%08lx [0x3e4ccccd] %s (0.2)\n", *((uint32_t*)&fp2), _ftostr(buf, fp2));
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printf("fp3:0x%08lx [0x3f000000] %s (0.5)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "3f000000");
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}
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int main(void)
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{
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float fp2 = 43.21f;
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printf("*** float-basic-const-const ***\n");
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printf("fp1:0x%08lx [0x414570a4] %s (12.340000)\n", *((uint32_t*)&fp1), _ftostr(buf, fp1));
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printf("fp2:0x%08lx [0x422cd70a] %s (43.209999)\n", *((uint32_t*)&fp2), _ftostr(buf, fp2));
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constconst();
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WAIT();
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printf("\nfloat-basic-const-const (res:%d)\n", result);
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return result;
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}
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