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109 lines
2.4 KiB
C
109 lines
2.4 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 = 1.0f;
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float fp2 = 200.0f; // aliased by variable in main
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float fp3 = 3.0f;
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float fp4 = 4.0f;
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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 test2(long n, long val)
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{
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if (n == val) {
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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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int main(void)
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{
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float fp2 = 2.00f;
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printf("float negate (minus)\n");
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printf("fp1:0x%08lx [0x3f800000] %s (1.0)", *((uint32_t*)&fp1), _ftostr(buf, fp1));
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test1(fp1, "3f800000");
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printf("fp2:0x%08lx [0x40000000] %s (2.0)", *((uint32_t*)&fp2), _ftostr(buf, fp2));
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test1(fp2, "40000000");
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var_sint = -fp1;
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fp3 = -fp2;
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fp2 = -fp1;
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printf("fp2 0x%08lx [0xbf800000] %s (-1.0) %d", *((uint32_t*)&fp2), _ftostr(buf, fp2), var_sint);
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test1(fp2, "bf800000");
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printf("fp3 0x%08lx [0xc0000000] %s (-2.0)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "c0000000");
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fp1 = 12.6f;
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fp2 = -fp1;
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var_sint = -fp1;
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fp3 = -fp2;
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printf("fp2 0x%08lx [0xc149999a] %s (-12.6) %d", *((uint32_t*)&fp2), _ftostr(buf, fp2), var_sint);
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test1(fp2, "c149999a");
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printf("fp3 0x%08lx [0x4149999a] %s (12.6)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "4149999a");
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fp1 = -12.6f;
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fp2 = -fp1;
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var_sint = -fp1;
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fp3 = -fp2;
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printf("fp2 0x%08lx [0x4149999a] %s (12.6) %d", *((uint32_t*)&fp2), _ftostr(buf, fp2), var_sint);
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test1(fp2, "4149999a");
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printf("fp3 0x%08lx [0xc149999a] %s (-12.6)", *((uint32_t*)&fp3), _ftostr(buf, fp3));
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test1(fp3, "c149999a");
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printf("float minus (res:%d)\n", result);
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return result;
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}
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