mirror of
https://github.com/cc65/cc65.git
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261 lines
3.5 KiB
C
261 lines
3.5 KiB
C
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/*
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!!DESCRIPTION!! Shift bytes left and right by a constant.
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!!ORIGIN!! SDCC regression tests
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!!LICENCE!! GPL, read COPYING.GPL
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*/
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#include <stdio.h>
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#include <limits.h>
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unsigned char success=0;
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unsigned char failures=0;
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unsigned char dummy=0;
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#ifdef SUPPORT_BIT_TYPES
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bit bit0 = 0;
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#endif
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#ifdef SIZEOF_INT_16BIT
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#if defined(__LINUX__) || defined(LINUX)
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signed short aint0 = 0;
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signed short aint1 = 0;
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#else
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signed int aint0 = 0;
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signed int aint1 = 0;
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#endif
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#else
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signed int aint0 = 0;
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signed int aint1 = 0;
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#endif
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signed char achar0 = 0;
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signed char achar1 = 0;
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signed char achar2 = 0;
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void done()
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{
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dummy++;
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}
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void check(void)
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{
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if(achar0 != achar1)
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failures++;
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}
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void shift_left_1(void)
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{
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achar0 <<= 1;
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check();
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}
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void shift_left_2(void)
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{
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achar0 <<= 2;
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if(achar0 != achar1)
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failures++;
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}
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void shift_left_3(void)
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{
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achar0 <<= 3;
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if(achar0 != achar1)
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failures++;
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}
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void shift_left_4(void)
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{
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achar0 <<= 4;
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if(achar0 != achar1)
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failures++;
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}
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void shift_left_5(void)
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{
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achar0 <<= 5;
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if(achar0 != achar1)
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failures++;
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}
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void shift_left_6(void)
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{
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achar0 <<= 6;
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if(achar0 != achar1)
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failures++;
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}
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void shift_left_7(void)
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{
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achar0 <<= 7;
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if(achar0 != achar1)
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failures++;
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}
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void shift_right_1(void)
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{
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achar0 >>= 1;
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check();
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}
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void shift_right_2(void)
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{
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achar0 >>= 2;
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check();
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}
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void shift_right_3(void)
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{
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achar0 >>= 3;
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check();
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}
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void shift_right_4(void)
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{
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achar0 >>= 4;
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check();
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}
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void shift_right_5(void)
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{
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achar0 >>= 5;
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check();
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}
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void shift_right_6(void)
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{
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achar0 >>= 6;
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check();
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}
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void shift_right_7(void)
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{
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achar0 >>= 7;
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check();
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}
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int main(void)
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{
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/* call with both values zero */
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shift_left_1();
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printf("failures: %d\n",failures);
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achar0 = 1;
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achar1 = 2;
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for(achar2=0; achar2<6; achar2++) {
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shift_left_1();
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achar1 <<=1;
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}
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printf("failures: %d\n",failures);
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achar0 = 1;
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achar1 = 4;
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shift_left_2();
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printf("failures: %d\n",failures);
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achar0 = 1;
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achar1 = 8;
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shift_left_3();
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printf("failures: %d\n",failures);
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achar0 = 1;
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achar1 = 0x10;
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shift_left_4();
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printf("failures: %d\n",failures);
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achar0 = 1;
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achar1 = 0x20;
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shift_left_5();
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printf("failures: %d\n",failures);
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achar0 = 1;
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achar1 = 0x40;
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shift_left_6();
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printf("failures: %d\n",failures);
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achar0 = 1;
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achar1 = 0x80;
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shift_left_7();
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printf("failures: %d\n",failures);
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achar0 = 2;
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achar1 = 1;
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shift_right_1();
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printf("failures: %d\n",failures);
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achar0 = 4;
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shift_right_2();
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printf("failures: %d\n",failures);
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achar0 = 8;
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shift_right_3();
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printf("failures: %d\n",failures);
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achar0 = 0x10;
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shift_right_4();
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printf("failures: %d\n",failures);
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achar0 = 0x20;
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shift_right_5();
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printf("failures: %d\n",failures);
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achar0 = 0x40;
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shift_right_6();
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printf("failures: %d\n",failures);
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achar0 = 0xff;
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achar1 = 0xff;
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shift_right_1();
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printf("failures: %d\n",failures);
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achar0 = 0xfe;
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achar1 = 0xff;
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shift_right_1();
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printf("failures: %d\n",failures);
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achar0 = 0xfc;
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shift_right_2();
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printf("failures: %d\n",failures);
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achar0 = 0xf8;
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shift_right_3();
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printf("failures: %d\n",failures);
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achar0 = 0xf0;
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shift_right_4();
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printf("failures: %d\n",failures);
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achar0 = 0xe0;
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shift_right_5();
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printf("failures: %d\n",failures);
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achar0 = 0xc0;
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shift_right_6();
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printf("failures: %d\n",failures);
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achar0 = 0x80;
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achar1 = 0xff;
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shift_right_7();
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success=failures;
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done();
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printf("failures: %d\n",failures);
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return failures;
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}
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