--- /dev/null
+/* AUTOGENERATED FILE. DO NOT EDIT. */
+
+//=======Test Runner Used To Run Each Test Below=====
+#define RUN_TEST(TestFunc, TestLineNum) \
+{ \
+ Unity.CurrentTestName = #TestFunc; \
+ Unity.CurrentTestLineNumber = TestLineNum; \
+ Unity.NumberOfTests++; \
+ if (TEST_PROTECT()) \
+ { \
+ setUp(); \
+ TestFunc(); \
+ } \
+ if (TEST_PROTECT() && !TEST_IS_IGNORED) \
+ { \
+ tearDown(); \
+ } \
+ UnityConcludeTest(); \
+}
+
+//=======Automagically Detected Files To Include=====
+#include "unity.h"
+#include <setjmp.h>
+#include <stdio.h>
+
+//=======External Functions This Runner Calls=====
+extern void setUp(void);
+extern void tearDown(void);
+extern void test_Helpers1();
+extern void test_Normalise();
+extern void test_SignNoFrac();
+extern void test_SignWithFrac();
+extern void test_CmpFracEQ();
+extern void test_CmpFracGT();
+extern void test_CmpFracLT();
+extern void test_AddFullNorm();
+extern void test_AddFullOflow1();
+extern void test_AddNsecNorm();
+extern void test_AddNsecOflow1();
+extern void test_SubFullNorm();
+extern void test_SubFullOflow();
+extern void test_SubNsecNorm();
+extern void test_SubNsecOflow();
+extern void test_Neg();
+extern void test_AbsNoFrac();
+extern void test_AbsWithFrac();
+extern void test_Helpers2();
+extern void test_ToLFPbittest();
+extern void test_ToLFPrelPos();
+extern void test_ToLFPrelNeg();
+extern void test_ToLFPabs();
+extern void test_FromLFPbittest();
+extern void test_FromLFPrelPos();
+extern void test_FromLFPrelNeg();
+extern void test_LFProundtrip();
+extern void test_ToString();
+
+
+//=======Test Reset Option=====
+void resetTest()
+{
+ tearDown();
+ setUp();
+}
+
+char *progname;
+
+
+//=======MAIN=====
+int main(int argc, char *argv[])
+{
+ progname = argv[0];
+ Unity.TestFile = "timespecops.c";
+ UnityBegin("timespecops.c");
+ RUN_TEST(test_Helpers1, 156);
+ RUN_TEST(test_Normalise, 176);
+ RUN_TEST(test_SignNoFrac, 190);
+ RUN_TEST(test_SignWithFrac, 202);
+ RUN_TEST(test_CmpFracEQ, 216);
+ RUN_TEST(test_CmpFracGT, 229);
+ RUN_TEST(test_CmpFracLT, 242);
+ RUN_TEST(test_AddFullNorm, 259);
+ RUN_TEST(test_AddFullOflow1, 273);
+ RUN_TEST(test_AddNsecNorm, 287);
+ RUN_TEST(test_AddNsecOflow1, 299);
+ RUN_TEST(test_SubFullNorm, 315);
+ RUN_TEST(test_SubFullOflow, 329);
+ RUN_TEST(test_SubNsecNorm, 343);
+ RUN_TEST(test_SubNsecOflow, 355);
+ RUN_TEST(test_Neg, 371);
+ RUN_TEST(test_AbsNoFrac, 388);
+ RUN_TEST(test_AbsWithFrac, 399);
+ RUN_TEST(test_Helpers2, 414);
+ RUN_TEST(test_ToLFPbittest, 446);
+ RUN_TEST(test_ToLFPrelPos, 459);
+ RUN_TEST(test_ToLFPrelNeg, 471);
+ RUN_TEST(test_ToLFPabs, 483);
+ RUN_TEST(test_FromLFPbittest, 498);
+ RUN_TEST(test_FromLFPrelPos, 517);
+ RUN_TEST(test_FromLFPrelNeg, 530);
+ RUN_TEST(test_LFProundtrip, 545);
+ RUN_TEST(test_ToString, 564);
+
+ return (UnityEnd());
+}
--- /dev/null
+#include "config.h"
+//#include "c_timestructs.h"
+
+#include "ntp_types.h"
+#include "ntp_fp.h"
+
+#include <math.h>
+#include "timespecops.h"
+
+#include "unity.h"
+
+
+#include <string.h>
+
+//in unity_helper.h :
+#define TEST_ASSERT_EQUAL_timespec(a, b) { \
+ TEST_ASSERT_EQUAL_MESSAGE(a.tv_sec, b.tv_sec, "Field tv_sec"); \
+ TEST_ASSERT_EQUAL_MESSAGE(a.tv_nsec, b.tv_nsec, "Field tv_nsec"); \
+}
+
+//what about l_fp.l_ui ??? it's a union so it's either l_fp.l_ui or l_fp.l_i?
+#define TEST_ASSERT_EQUAL_l_fp(a, b) { \
+ TEST_ASSERT_EQUAL_MESSAGE(a.l_i, b.l_i, "Field l_i"); \
+ TEST_ASSERT_EQUAL_UINT_MESSAGE(a.l_uf, b.l_uf, "Field l_uf"); \
+}
+
+//timespec has time_t, long, and time_t is basically long uint, 4 or 8 bytes size, depending on 32/64bit
+
+static u_int32 my_tick_to_tsf(u_int32 ticks);
+static u_int32 my_tsf_to_tick(u_int32 tsf);
+
+// that's it...
+struct lfpfracdata {
+ long nsec;
+ u_int32 frac;
+};
+
+//******************************************MY CUSTOM FUNCTIONS*******************************
+
+typedef int bool; //TRUE and FALSE are already defined somewhere, so I can't do typedef enum { FALSE, TRUE } boolean;
+
+const bool timespec_isValid(struct timespec V)
+ { return V.tv_nsec >= 0 && V.tv_nsec < 1000000000; }
+
+struct timespec timespec_init(time_t hi, long lo){
+ struct timespec V;
+ V.tv_sec = hi;
+ V.tv_nsec = lo;
+ return V;
+}
+
+//taken from lfpfunc.c -> maybe remove this from timevalops.c and lfpfunc. and put in c_timstructs.h ????!!!!!
+l_fp l_fp_init(int32 i, u_int32 f)
+{
+ l_fp temp;
+ temp.l_i = i;
+ temp.l_uf = f;
+
+ return temp;
+}
+
+//also in timelalops.c!!!!!!
+bool AssertFpClose(const l_fp m,const l_fp n, const l_fp limit)
+{
+ l_fp diff;
+
+ if (L_ISGEQ(&m, &n)) {
+ diff = m;
+ L_SUB(&diff, &n);
+ } else {
+ diff = n;
+ L_SUB(&diff, &m);
+ }
+ if (L_ISGEQ(&limit, &diff)){
+ return TRUE;
+ }
+ else {
+ //<< m_expr << " which is " << l_fp_wrap(m)
+ //<< "\nand\n"
+ //<< n_expr << " which is " << l_fp_wrap(n)
+ //<< "\nare not close; diff=" << l_fp_wrap(diff);
+ return FALSE;
+ }
+}
+
+
+bool AssertTimespecClose(const struct timespec m,const struct timespec n, const struct timespec limit)
+{
+ struct timespec diff;
+
+ diff = abs_tspec(sub_tspec(m, n));
+ if (cmp_tspec(limit, diff) >= 0)
+ return TRUE;
+ else
+ {
+ //<< m_expr << " which is " << timespec_wrap(m)
+ //<< "\nand\n"
+ //<< n_expr << " which is " << timespec_wrap(n)
+ //<< "\nare not close; diff=" << timespec_wrap(diff);
+ return FALSE;
+ }
+}
+
+//-----------------------------------------------
+
+static const struct lfpfracdata fdata[] = {
+ { 0, 0x00000000 }, { 2218896, 0x00916ae6 },
+ { 16408100, 0x0433523d }, { 125000000, 0x20000000 },
+ { 250000000, 0x40000000 }, { 287455871, 0x4996b53d },
+ { 375000000, 0x60000000 }, { 500000000, 0x80000000 },
+ { 518978897, 0x84dbcd0e }, { 563730222, 0x90509fb3 },
+ { 563788007, 0x9054692c }, { 583289882, 0x95527c57 },
+ { 607074509, 0x9b693c2a }, { 625000000, 0xa0000000 },
+ { 645184059, 0xa52ac851 }, { 676497788, 0xad2ef583 },
+ { 678910895, 0xadcd1abb }, { 679569625, 0xadf84663 },
+ { 690926741, 0xb0e0932d }, { 705656483, 0xb4a5e73d },
+ { 723553854, 0xb93ad34c }, { 750000000, 0xc0000000 },
+ { 763550253, 0xc3780785 }, { 775284917, 0xc6791284 },
+ { 826190764, 0xd3813ce8 }, { 875000000, 0xe0000000 },
+ { 956805507, 0xf4f134a9 }, { 982570733, 0xfb89c16c }
+ };
+
+
+u_int32 my_tick_to_tsf(u_int32 ticks)
+{
+ // convert nanoseconds to l_fp fractional units, using double
+ // precision float calculations or, if available, 64bit integer
+ // arithmetic. This should give the precise fraction, rounded to
+ // the nearest representation.
+#ifdef HAVE_U_INT64
+ return (u_int32)((( ((u_int64)(ticks)) << 32) + 500000000) / 1000000000);
+#else
+ return (u_int32)((double(ticks)) * 4.294967296 + 0.5);
+#endif
+ // And before you ask: if ticks >= 1000000000, the result is
+ // truncated nonsense, so don't use it out-of-bounds.
+}
+
+u_int32 my_tsf_to_tick(u_int32 tsf)
+{
+ // Inverse operation: converts fraction to microseconds.
+#ifdef HAVE_U_INT64
+ return (u_int32)(( ((u_int64)(tsf)) * 1000000000 + 0x80000000) >> 32);
+#else
+ return (u_int32)(double(tsf) / 4.294967296 + 0.5);
+#endif
+ // Beware: The result might be 10^9 due to rounding!
+}
+
+
+
+// ---------------------------------------------------------------------
+// test support stuff -- part 1
+// ---------------------------------------------------------------------
+
+void test_Helpers1() {
+ struct timespec x;
+
+ for (x.tv_sec = -2; x.tv_sec < 3; x.tv_sec++) {
+ x.tv_nsec = -1;
+ TEST_ASSERT_FALSE(timespec_isValid(x));
+ x.tv_nsec = 0;
+ TEST_ASSERT_TRUE(timespec_isValid(x));
+ x.tv_nsec = 999999999;
+ TEST_ASSERT_TRUE(timespec_isValid(x));
+ x.tv_nsec = 1000000000;
+ TEST_ASSERT_FALSE(timespec_isValid(x));
+ }
+}
+
+
+//----------------------------------------------------------------------
+// test normalisation
+//----------------------------------------------------------------------
+
+void test_Normalise() {
+ long ns;
+ for ( ns = -2000000000; ns <= 2000000000; ns += 10000000) {
+ struct timespec x = timespec_init(0, ns);
+
+ x = normalize_tspec(x);
+ TEST_ASSERT_TRUE(timespec_isValid(x));
+ }
+}
+
+//----------------------------------------------------------------------
+// test classification
+//----------------------------------------------------------------------
+
+void test_SignNoFrac() {
+ // sign test, no fraction
+ int i;
+ for (i = -4; i <= 4; ++i) {
+ struct timespec a = timespec_init(i, 0);
+ int E = (i > 0) - (i < 0);
+ int r = test_tspec(a);
+
+ TEST_ASSERT_EQUAL(E, r);
+ }
+}
+
+void test_SignWithFrac() {
+ // sign test, with fraction
+ int i;
+ for (i = -4; i <= 4; ++i) {
+ struct timespec a = timespec_init(i, 10);
+ int E = (i >= 0) - (i < 0);
+ int r = test_tspec(a);
+ TEST_ASSERT_EQUAL(E, r);
+ }
+}
+
+//----------------------------------------------------------------------
+// test compare
+//----------------------------------------------------------------------
+void test_CmpFracEQ() {
+ // fractions are equal
+ int i,j;
+ for (i = -4; i <= 4; ++i)
+ for (j = -4; j <= 4; ++j) {
+ struct timespec a = timespec_init( i , 200);
+ struct timespec b = timespec_init( j , 200);
+ int E = (i > j) - (i < j);
+ int r = cmp_tspec_denorm(a, b);
+ TEST_ASSERT_EQUAL(E, r);
+ }
+}
+
+void test_CmpFracGT() {
+ // fraction a bigger fraction b
+ int i,j;
+ for (i = -4; i <= 4; ++i)
+ for (j = -4; j <= 4; ++j) {
+ struct timespec a = timespec_init(i, 999999800);
+ struct timespec b = timespec_init(j, 200);
+ int E = (i >= j) - (i < j);
+ int r = cmp_tspec_denorm(a, b);
+ TEST_ASSERT_EQUAL(E, r);
+ }
+}
+
+void test_CmpFracLT() {
+ // fraction a less fraction b
+ int i,j;
+ for (i = -4; i <= 4; ++i)
+ for (j = -4; j <= 4; ++j) {
+ struct timespec a = timespec_init(i, 200);
+ struct timespec b = timespec_init(j, 999999800);
+ int E = (i > j) - (i <= j);
+ int r = cmp_tspec_denorm(a, b);
+ TEST_ASSERT_EQUAL(E, r);
+ }
+}
+
+//----------------------------------------------------------------------
+// Test addition (sum)
+//----------------------------------------------------------------------
+
+void test_AddFullNorm() {
+ int i,j;
+ for (i = -4; i <= 4; ++i)
+ for (j = -4; j <= 4; ++j) {
+ struct timespec a = timespec_init(i, 200);
+ struct timespec b = timespec_init(j, 400);
+ struct timespec E = timespec_init(i + j, 200 + 400);
+ struct timespec c;
+
+ c = add_tspec(a, b);
+ TEST_ASSERT_EQUAL_timespec(E, c);
+ }
+}
+
+void test_AddFullOflow1() {
+ int i,j;
+ for (i = -4; i <= 4; ++i)
+ for (j = -4; j <= 4; ++j) {
+ struct timespec a = timespec_init(i, 200);
+ struct timespec b = timespec_init(j, 999999900);
+ struct timespec E = timespec_init(i + j + 1, 100);
+ struct timespec c;
+
+ c = add_tspec(a, b);
+ TEST_ASSERT_EQUAL_timespec(E, c);
+ }
+}
+
+void test_AddNsecNorm() {
+ int i;
+ for (i = -4; i <= 4; ++i) {
+ struct timespec a = timespec_init(i, 200);
+ struct timespec E = timespec_init(i, 600);
+ struct timespec c;
+
+ c = add_tspec_ns(a, 600 - 200);
+ TEST_ASSERT_EQUAL_timespec(E, c);
+ }
+}
+
+void test_AddNsecOflow1() {
+ int i;
+ for (i = -4; i <= 4; ++i) {
+ struct timespec a = timespec_init(i, 200);
+ struct timespec E = timespec_init(i + 1, 100);
+ struct timespec c;
+
+ c = add_tspec_ns(a, NANOSECONDS - 100);
+ TEST_ASSERT_EQUAL_timespec(E, c);
+ }
+}
+
+//----------------------------------------------------------------------
+// test subtraction (difference)
+//----------------------------------------------------------------------
+
+void test_SubFullNorm() {
+ int i,j;
+ for (i = -4; i <= 4; ++i)
+ for (j = -4; j <= 4; ++j) {
+ struct timespec a = timespec_init( i , 600);
+ struct timespec b = timespec_init( j , 400);
+ struct timespec E = timespec_init(i-j, 200);
+ struct timespec c;
+
+ c = sub_tspec(a, b);
+ TEST_ASSERT_EQUAL_timespec(E, c);
+ }
+}
+
+void test_SubFullOflow() {
+ int i,j;
+ for (i = -4; i <= 4; ++i)
+ for (j = -4; j <= 4; ++j) {
+ struct timespec a = timespec_init( i , 100);
+ struct timespec b = timespec_init( j , 999999900);
+ struct timespec E = timespec_init(i-j-1, 200);
+ struct timespec c;
+
+ c = sub_tspec(a, b);
+ TEST_ASSERT_EQUAL_timespec(E, c);
+ }
+}
+
+void test_SubNsecNorm() {
+ int i;
+ for (i = -4; i <= 4; ++i) {
+ struct timespec a = timespec_init(i, 600);
+ struct timespec E = timespec_init(i, 200);
+ struct timespec c;
+
+ c = sub_tspec_ns(a, 600 - 200);
+ TEST_ASSERT_EQUAL_timespec(E, c);
+ }
+}
+
+void test_SubNsecOflow() {
+ int i;
+ for (i = -4; i <= 4; ++i) {
+ struct timespec a = timespec_init( i , 100);
+ struct timespec E = timespec_init(i-1, 200);
+ struct timespec c;
+
+ c = sub_tspec_ns(a, NANOSECONDS - 100);
+ TEST_ASSERT_EQUAL_timespec(E, c);
+ }
+}
+
+//----------------------------------------------------------------------
+// test negation
+//----------------------------------------------------------------------
+
+void test_Neg() {
+ int i;
+ for (i = -4; i <= 4; ++i) {
+ struct timespec a = timespec_init(i, 100);
+ struct timespec b;
+ struct timespec c;
+
+ b = neg_tspec(a);
+ c = add_tspec(a, b);
+ TEST_ASSERT_EQUAL(0, test_tspec(c));
+ }
+}
+
+//----------------------------------------------------------------------
+// test abs value
+//----------------------------------------------------------------------
+
+void test_AbsNoFrac() {
+ int i;
+ for (i = -4; i <= 4; ++i) {
+ struct timespec a = timespec_init(i , 0);
+ struct timespec b;
+
+ b = abs_tspec(a);
+ TEST_ASSERT_EQUAL((i != 0), test_tspec(b));
+ }
+}
+
+void test_AbsWithFrac() {
+ int i;
+ for (i = -4; i <= 4; ++i) {
+ struct timespec a = timespec_init(i, 100);
+ struct timespec b;
+
+ b = abs_tspec(a);
+ TEST_ASSERT_EQUAL(1, test_tspec(b));
+ }
+}
+
+// ---------------------------------------------------------------------
+// test support stuff -- part 2
+// ---------------------------------------------------------------------
+
+void test_Helpers2() {
+ struct timespec limit = timespec_init(0,2);
+
+ struct timespec x, y;
+ long i;
+
+ for (x.tv_sec = -2; x.tv_sec < 3; x.tv_sec++)
+ for (x.tv_nsec = 1;
+ x.tv_nsec < 1000000000;
+ x.tv_nsec += 499999999) {
+ for (i = -4; i < 5; i++) {
+ y = x;
+ y.tv_nsec += i;
+ if (i >= -2 && i <= 2){
+ TEST_ASSERT_TRUE(AssertTimespecClose(x,y,limit));//ASSERT_PRED_FORMAT2(isClose, x, y);
+ }
+ else
+ {
+ TEST_ASSERT_FALSE(AssertTimespecClose(x,y,limit));//ASSERT_PRED_FORMAT2(!isClose, x, y);
+ }
+ }
+ }
+}
+
+// global predicate instances we're using here
+//static l_fp lfpClose = l_fp_init(0,1); //static AssertFpClose FpClose(0, 1);
+//static struct timespec limit = timespec_init(0,2); //static AssertTimespecClose TimespecClose(0, 2);
+
+//----------------------------------------------------------------------
+// conversion to l_fp
+//----------------------------------------------------------------------
+
+void test_ToLFPbittest() {
+ l_fp lfpClose = l_fp_init(0,1);
+ u_int32 i;
+ for (i = 0; i < 1000000000; i+=1000) {
+ struct timespec a = timespec_init(1, i);
+ l_fp E= l_fp_init(1, my_tick_to_tsf(i));
+ l_fp r;
+
+ r = tspec_intv_to_lfp(a);
+ TEST_ASSERT_TRUE(AssertFpClose(E,r,lfpClose)); //ASSERT_PRED_FORMAT2(FpClose, E, r);
+ }
+}
+
+void test_ToLFPrelPos() {
+ int i;
+ for (i = 0; i < COUNTOF(fdata); i++) {
+ struct timespec a = timespec_init(1, fdata[i].nsec);
+ l_fp E = l_fp_init(1, fdata[i].frac);
+ l_fp r;
+
+ r = tspec_intv_to_lfp(a);
+ TEST_ASSERT_EQUAL_l_fp(E, r);
+ }
+}
+
+void test_ToLFPrelNeg() {
+ int i;
+ for (i = 0; i < COUNTOF(fdata); i++) {
+ struct timespec a = timespec_init(-1, fdata[i].nsec);
+ l_fp E = l_fp_init(~0, fdata[i].frac);
+ l_fp r;
+
+ r = tspec_intv_to_lfp(a);
+ TEST_ASSERT_EQUAL_l_fp(E, r);
+ }
+}
+
+void test_ToLFPabs() {
+ int i;
+ for (i = 0; i < COUNTOF(fdata); i++) {
+ struct timespec a = timespec_init(1, fdata[i].nsec);
+ l_fp E = l_fp_init(1 + JAN_1970, fdata[i].frac);
+ l_fp r;
+
+ r = tspec_stamp_to_lfp(a);
+ TEST_ASSERT_EQUAL_l_fp(E, r);
+ }
+}
+
+//----------------------------------------------------------------------
+// conversion from l_fp
+//----------------------------------------------------------------------
+void test_FromLFPbittest() {
+ struct timespec limit = timespec_init(0,2);
+
+ // Not *exactly* a bittest, because 2**32 tests would take a
+ // really long time even on very fast machines! So we do test
+ // every 1000 fractional units.
+ u_int32 tsf;
+ for (tsf = 0; tsf < ~((u_int32)(1000)); tsf += 1000) {
+ struct timespec E = timespec_init(1, my_tsf_to_tick(tsf));
+ l_fp a = l_fp_init(1, tsf);
+ struct timespec r;
+
+ r = lfp_intv_to_tspec(a);
+ // The conversion might be off by one nanosecond when
+ // comparing to calculated value.
+ TEST_ASSERT_TRUE(AssertTimespecClose(E,r,limit)); //ASSERT_PRED_FORMAT2(TimespecClose, E, r);
+ }
+}
+
+void test_FromLFPrelPos() {
+ struct timespec limit = timespec_init(0,2);
+ int i;
+ for (i = 0; i < COUNTOF(fdata); i++) {
+ l_fp a = l_fp_init(1, fdata[i].frac);
+ struct timespec E = timespec_init(1, fdata[i].nsec);
+ struct timespec r;
+
+ r = lfp_intv_to_tspec(a);
+ TEST_ASSERT_TRUE(AssertTimespecClose(E,r,limit)); //ASSERT_PRED_FORMAT2(TimespecClose, E, r);
+ }
+}
+
+void test_FromLFPrelNeg() {
+ struct timespec limit = timespec_init(0,2);
+ int i;
+ for (i = 0; i < COUNTOF(fdata); i++) {
+ l_fp a = l_fp_init(~0, fdata[i].frac);
+ struct timespec E = timespec_init(-1, fdata[i].nsec);
+ struct timespec r;
+
+ r = lfp_intv_to_tspec(a);
+ TEST_ASSERT_TRUE(AssertTimespecClose(E,r,limit)); //ASSERT_PRED_FORMAT2(TimespecClose, E, r);
+ }
+}
+
+
+// nsec -> frac -> nsec roundtrip, using a prime start and increment
+void test_LFProundtrip() {
+ int32_t t;
+ u_int32 i;
+ for (t = -1; t < 2; ++t)
+ for (i = 4999; i < 1000000000; i+=10007) {
+ struct timespec E = timespec_init(t, i);
+ l_fp a;
+ struct timespec r;
+
+ a = tspec_intv_to_lfp(E);
+ r = lfp_intv_to_tspec(a);
+ TEST_ASSERT_EQUAL_timespec(E, r);
+ }
+}
+
+//----------------------------------------------------------------------
+// string formatting
+//----------------------------------------------------------------------
+
+void test_ToString() {
+ static const struct {
+ time_t sec;
+ long nsec;
+ const char * repr;
+ } data [] = {
+ { 0, 0, "0.000000000" },
+ { 2, 0, "2.000000000" },
+ {-2, 0, "-2.000000000" },
+ { 0, 1, "0.000000001" },
+ { 0,-1, "-0.000000001" },
+ { 1,-1, "0.999999999" },
+ {-1, 1, "-0.999999999" },
+ {-1,-1, "-1.000000001" },
+ };
+ int i;
+ for (i = 0; i < COUNTOF(data); i++) {
+ struct timespec a = timespec_init(data[i].sec, data[i].nsec);
+ const char * E = data[i].repr;
+ const char * r = tspectoa(a);
+ TEST_ASSERT_EQUAL_STRING(E, r);
+ }
+}
+
+// -*- EOF -*-
projects / thirdparty / ntp.git / commitdiff
