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119 lines
2.9 KiB
C
119 lines
2.9 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 varvar(void)
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{
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printf("\nvariable vs variable\n\n");
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/* addition, variable + variable */
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fp1 = 16.5f;
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fp2 = 64.25f;
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fp3 = fp1 + fp2; // = 80.75f
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printf("addition: %s+%s=%s\n", _ftostr(buf, fp1), _ftostr(buf2, fp2), _ftostr(buf3, fp3));
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printf(" fp3:0x%08lx [0x42a18000] %s (exp:80.75)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "42a18000");
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/* subtraction, variable - variable */
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fp1 = 64.25f;
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fp2 = 16.5f;
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fp3 = fp1 - fp2;
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printf("substraction: %s-%s=%s\n", _ftostr(buf, fp1), _ftostr(buf2, fp2), _ftostr(buf3, fp3));
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printf(" fp3:0x%08lx [0x423f0000] %s (exp:47.75)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "423f0000");
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fp1 = 0.1f;
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fp2 = 0.3f;
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fp3 = fp2 - fp1;
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printf("fp3:0x%08lx [0x3e4cccce] %s (0.2)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "3e4cccce");
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fp3 = fp1 - fp2;
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printf("fp3:0x%08lx [0xbe4cccce] %s (-0.2)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "be4cccce");
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/* multiplication, variable * variable */
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fp1 = 8.5f;
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fp2 = 2.25f;
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fp3 = fp1 * fp2;
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printf("multiplication: %s*%s=%s\n", _ftostr(buf, fp1), _ftostr(buf2, fp2), _ftostr(buf3, fp3));
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printf(" fp3:0x%08lx [0x41990000] %s (exp:19.125)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "41990000");
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/* division, variable / variable */
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fp1 = 16.25f;
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fp2 = 2.5f;
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fp3 = fp1 / fp2;
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printf("division: %s/%s=%s\n", _ftostr(buf, fp1), _ftostr(buf2, fp2), _ftostr(buf3, fp3));
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printf(" fp3:0x%08lx [0x40d00000] %s (exp:6.5)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "40d00000");
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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-var-var\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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varvar();
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WAIT();
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printf("\nfloat-basic-var-var (res:%d)\n", result);
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return result;
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}
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