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110 lines
2.7 KiB
C
110 lines
2.7 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 constintvar(void)
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{
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printf("\nfloat constant vs int variable\n\n");
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var_sint = 64;
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fp3 = 16.75f + var_sint;
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printf("addition: %s+%d=%s\n", _ftostr(buf, 16.75f), var_sint, _ftostr(buf3, fp3));
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printf(" fp3:0x%08lx [0x42a18000] %s (80.75)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "42a18000");
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var_sint = 16;
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fp3 = 18.5f - var_sint;
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printf("substraction: %s-%d=%s\n", _ftostr(buf, 8.5f), var_sint, _ftostr(buf3, fp3));
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printf(" fp3:0x%08lx [0x40200000] %s (2.5)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "40200000");
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var_sint = 13;
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fp3 = 20.6f - var_sint;
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printf("fp3:0x%08lx [0x40f33334] %s (7.6)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "40f33334");
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var_sint = 13;
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fp3 = 10.2f - var_sint;
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printf("fp3:0x%08lx [0xc0333334] %s (-2.8)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "c0333334");
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var_sint = 2;
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fp3 = 16.25f * var_sint;
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printf("multiplication: %s*%d=%s\n", _ftostr(buf, 16.25f), var_sint, _ftostr(buf3, fp3));
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printf(" fp3:0x%08lx [0x42020000] %s (32.5)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "42020000");
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var_sint = 2;
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fp3 = 16.2f / var_sint;
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printf("division: %s/%d=%s\n", _ftostr(buf, 16.2f), var_sint, _ftostr(buf3, fp3));
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printf(" fp3:0x%08lx [0x4101999a] %s (8.1)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "4101999a");
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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-intvar\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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constintvar();
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WAIT();
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printf("\nfloat-basic-const-intvar (res:%d)\n", result);
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return result;
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}
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