added unit tests for calc.h

devel/lib_tests/lib

@@ -0,0 +1 @@
+/home/ondra/devel/avr/avr-projects/devel/lib

devel/lib_tests/run_tests.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+dir=/tmp/avrclib_unittest
+
+[ -d "$dir" ] || mkdir "$dir"
+
+gcc test_calc.c -o "$dir/test_calc" &&  "$dir/test_calc"
+

devel/lib_tests/test_calc.c

@@ -0,0 +1,356 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <assert.h>
+
+#include "lib/calc.h"
+
+void main()
+{
+	printf("== calc.h ==\n");
+
+	int i;
+	int a;
+
+	printf("fn: inc_wrap()\n");
+	{
+		// normal operation
+		a = 1;
+		inc_wrap(a, 0, 15);
+		assert(a == 2);
+
+		// overflow
+		a = 14;
+		inc_wrap(a, 0, 15);
+		assert(a == 0);
+	}
+
+
+	printf("fn: inc_wrapi()\n");
+	{
+		// normal operation
+		a = 1;
+		inc_wrapi(a, 0, 15);
+		assert(a == 2);
+
+		// not overflow yet
+		a = 14;
+		inc_wrapi(a, 0, 15);
+		assert(a == 15);
+
+		// overflow
+		a = 15;
+		inc_wrap(a, 0, 15);
+		assert(a == 0);
+	}
+
+
+	printf("fn: dec_wrap()\n");
+	{
+		// normal operation
+		a = 5;
+		dec_wrap(a, 0, 15);
+		assert(a == 4);
+
+		// underflow
+		a = 0;
+		dec_wrap(a, 0, 15);
+		assert(a == 14);
+	}
+
+
+	printf("fn: dec_wrapi()\n");
+	{
+		// normal operation
+		a = 5;
+		dec_wrapi(a, 0, 15);
+		assert(a == 4);
+
+		// underflow
+		a = 0;
+		dec_wrapi(a, 0, 15);
+		assert(a == 15);
+	}
+
+
+	printf("fn: sbi()\n");
+	{
+		a = 0;
+		sbi(a, 2);
+		assert(a == 0b100);
+	}
+
+
+	printf("fn: cbi()\n");
+	{
+		a = 0b11111;
+		cbi(a, 2);
+		assert(a == 0b11011);
+	}
+
+
+	printf("fn: read_bit()\n");
+	{
+		a = 0b101;
+		assert(read_bit(a, 0) == 1);
+		assert(read_bit(a, 1) == 0);
+		assert(read_bit(a, 2) == 1);
+	}
+
+
+	printf("fn: bit_is_high()\n");
+	{
+		a = 0b101;
+		assert(bit_is_high(a, 0) == 1);
+		assert(bit_is_high(a, 1) == 0);
+		assert(bit_is_high(a, 2) == 1);
+	}
+
+
+	printf("fn: bit_is_low()\n");
+	{
+		a = 0b101;
+		assert(bit_is_low(a, 0) == 0);
+		assert(bit_is_low(a, 1) == 1);
+		assert(bit_is_low(a, 2) == 0);
+	}
+
+
+	printf("fn: toggle_bit()\n");
+	{
+		a = 0;
+		toggle_bit(a, 2);
+		assert(a == 0b00100);
+		toggle_bit(a, 4);
+		assert(a == 0b10100);
+		toggle_bit(a, 4);
+		assert(a == 0b00100);
+	}
+
+	// pointer variants
+
+	int* b = &a;
+
+	printf("fn: sbi_p()\n");
+	{
+		*b = 0;
+		sbi_p(b, 2);
+		assert(*b == 0b100);
+	}
+
+
+	printf("fn: cbi_p()\n");
+	{
+		*b = 0b11111;
+		cbi_p(b, 2);
+		assert(*b == 0b11011);
+	}
+
+
+	printf("fn: read_bit_p()\n");
+	{
+		*b = 0b101;
+		assert(read_bit_p(b, 0) == 1);
+		assert(read_bit_p(b, 1) == 0);
+		assert(read_bit_p(b, 2) == 1);
+	}
+
+
+	printf("fn: bit_is_high_p()\n");
+	{
+		*b = 0b101;
+		assert(bit_is_high_p(b, 0) == 1);
+		assert(bit_is_high_p(b, 1) == 0);
+		assert(bit_is_high_p(b, 2) == 1);
+	}
+
+
+	printf("fn: bit_is_low_p()\n");
+	{
+		*b = 0b101;
+		assert(bit_is_low_p(b, 0) == 0);
+		assert(bit_is_low_p(b, 1) == 1);
+		assert(bit_is_low_p(b, 2) == 0);
+	}
+
+
+	printf("fn: toggle_bit_p()\n");
+	{
+		*b = 0;
+		toggle_bit_p(b, 2);
+		assert(*b == 0b00100);
+		toggle_bit_p(b, 4);
+		assert(*b == 0b10100);
+		toggle_bit_p(b, 4);
+		assert(*b == 0b00100);
+	}
+
+
+	// -- nibbles --
+
+	printf("fn: write_low_nibble()\n");
+	{
+		a = 0xAC;
+		write_low_nibble(a, 0x5); // shifted 4 left
+		assert(a == 0xA5);
+
+		a = 0xAB;
+		write_low_nibble(a, 0x65); // shifted 4 left, extra ignored
+		assert(a == 0xA5);
+	}
+
+
+	printf("fn: write_high_nibble()\n");
+	{
+		a = 0xAC;
+		write_high_nibble(a, 0x5); // shifted 4 left
+		assert(a == 0x5C);
+
+		a = 0xAB;
+		write_high_nibble(a, 0x65); // shifted 4 left, extra ignored
+		assert(a == 0x5B);
+	}
+
+
+	printf("fn: write_low_nibble_p()\n");
+	{
+		*b = 0xAC;
+		write_low_nibble_p(b, 0x5); // shifted 4 left
+		assert(*b == 0xA5);
+
+		*b = 0xAB;
+		write_low_nibble_p(b, 0x65); // shifted 4 left, extra ignored
+		assert(*b == 0xA5);
+	}
+
+
+	printf("fn: write_high_nibble_p()\n");
+	{
+		*b = 0xAC;
+		write_high_nibble_p(b, 0x5); // shifted 4 left
+		assert(*b == 0x5C);
+
+		*b = 0xAB;
+		write_high_nibble_p(b, 0x65); // shifted 4 left, extra ignored
+		assert(*b == 0x5B);
+	}
+
+
+	printf("fn: in_range()\n");
+	{
+		// regular
+		assert(in_range(10, 10, 15));
+		assert(in_range(14, 10, 15));
+		assert(in_range(13, 10, 15));
+		// under
+		assert(!in_range(9, 10, 15));
+		assert(!in_range(0, 10, 15));
+		// above
+		assert(!in_range(15, 10, 15));
+		assert(!in_range(99, 10, 15));
+
+		// swapped bounds
+
+		// regular
+		assert(in_range(10, 15, 10));
+		assert(in_range(14, 15, 10));
+		assert(in_range(13, 15, 10));
+		// under
+		assert(!in_range(9, 15, 10));
+		assert(!in_range(0, 15, 10));
+		// above
+		assert(!in_range(15, 15, 10));
+		assert(!in_range(99, 15, 10));
+	}
+
+
+	printf("fn: in_rangei()\n");
+	{
+		// regular
+		assert(in_rangei(10, 10, 15));
+		assert(in_rangei(15, 10, 15));
+		assert(in_rangei(13, 10, 15));
+		// under
+		assert(!in_rangei(9, 10, 15));
+		assert(!in_rangei(0, 10, 15));
+		// above
+		assert(!in_rangei(16, 10, 15));
+		assert(!in_rangei(99, 10, 15));
+
+		// -- swapped bounds --
+
+		// regular
+		assert(in_rangei(10, 15, 10));
+		assert(in_rangei(15, 15, 10));
+		assert(in_rangei(13, 15, 10));
+		// under
+		assert(!in_rangei(9, 15, 10));
+		assert(!in_rangei(0, 15, 10));
+		// above
+		assert(!in_rangei(16, 15, 10));
+		assert(!in_rangei(99, 15, 10));
+	}
+
+
+	printf("fn: in_range_wrap()\n");
+	{
+		// as regular range
+
+		// regular
+		assert(in_range_wrap(10, 10, 15));
+		assert(in_range_wrap(14, 10, 15));
+		assert(in_range_wrap(13, 10, 15));
+		// under
+		assert(!in_range_wrap(9, 10, 15));
+		assert(!in_range_wrap(0, 10, 15));
+		// above
+		assert(!in_range_wrap(15, 10, 15));
+		assert(!in_range_wrap(16, 10, 15));
+		assert(!in_range_wrap(99, 10, 15));
+
+		// with wrap (>= 15, < 10)
+
+		// regular
+		assert(!in_range_wrap(10, 15, 10));
+		assert(!in_range_wrap(14, 15, 10));
+		assert(!in_range_wrap(13, 15, 10));
+		// under
+		assert(in_range_wrap(9, 15, 10));
+		assert(in_range_wrap(0, 15, 10));
+		// above
+		assert(in_range_wrap(16, 15, 10));
+		assert(in_range_wrap(99, 15, 10));
+	}
+
+
+	printf("fn: in_range_wrapi()\n");
+	{
+		// as regular range
+
+		// regular
+		assert(in_range_wrapi(10, 10, 15));
+		assert(in_range_wrapi(15, 10, 15));
+		assert(in_range_wrapi(13, 10, 15));
+		// under
+		assert(!in_range_wrapi(9, 10, 15));
+		assert(!in_range_wrapi(0, 10, 15));
+		// above
+		assert(!in_range_wrapi(16, 10, 15));
+		assert(!in_range_wrapi(99, 10, 15));
+
+		// with wrap (>= 15, < 10)
+
+		// regular
+		assert(in_range_wrapi(10, 15, 10));
+		assert(!in_range_wrapi(14, 15, 10));
+		assert(!in_range_wrapi(13, 15, 10));
+		// under
+		assert(in_range_wrapi(10, 15, 10));
+		assert(in_range_wrapi(0, 15, 10));
+		// above
+		assert(in_range_wrapi(16, 15, 10));
+		assert(in_range_wrapi(99, 15, 10));
+	}
+
+	printf("== PASSED ==\n");
+}

devel/lib_tests/test_loops_visual.c

@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <assert.h>
+
+#include "lib/loops.h"
+
+void main()
+{
+	repeat(5) printf("Five times!\n");
+	repeatx(500) printf(".");
+	printf("\n");
+	int i = 0;
+	until (i == 100) i++;
+	
+	whilst (i > 0) {
+	  i--;
+	  printf("i = %d\n", i);
+	}
+	
+	printf("\n");
+	
+	loop(moo, 7) {
+	  printf("moo = %d\n", moo);
+	}
+}