diff options
Diffstat (limited to 'deps/v8/test/cctest/test-fast-dtoa.cc')
-rw-r--r-- | deps/v8/test/cctest/test-fast-dtoa.cc | 84 |
1 files changed, 40 insertions, 44 deletions
diff --git a/deps/v8/test/cctest/test-fast-dtoa.cc b/deps/v8/test/cctest/test-fast-dtoa.cc index c063d6348b..50c1935376 100644 --- a/deps/v8/test/cctest/test-fast-dtoa.cc +++ b/deps/v8/test/cctest/test-fast-dtoa.cc @@ -27,12 +27,12 @@ #include <stdlib.h> -#include "src/v8.h" +#include "src/init/v8.h" #include "src/base/platform/platform.h" -#include "src/diy-fp.h" -#include "src/double.h" -#include "src/fast-dtoa.h" +#include "src/numbers/diy-fp.h" +#include "src/numbers/double.h" +#include "src/numbers/fast-dtoa.h" #include "test/cctest/cctest.h" #include "test/cctest/gay-precision.h" #include "test/cctest/gay-shortest.h" @@ -43,18 +43,14 @@ namespace test_fast_dtoa { static const int kBufferSize = 100; - -// Removes trailing '0' digits. -static void TrimRepresentation(Vector<char> representation) { - int len = StrLength(representation.start()); - int i; - for (i = len - 1; i >= 0; --i) { - if (representation[i] != '0') break; - } - representation[i + 1] = '\0'; +// Removes trailing '0' digits (modifies {representation}). Can create an empty +// string if all digits are 0. +static void TrimRepresentation(char* representation) { + size_t len = strlen(representation); + while (len > 0 && representation[len - 1] == '0') --len; + representation[len] = '\0'; } - TEST(FastDtoaShortestVariousDoubles) { char buffer_container[kBufferSize]; Vector<char> buffer(buffer_container, kBufferSize); @@ -66,44 +62,44 @@ TEST(FastDtoaShortestVariousDoubles) { status = FastDtoa(min_double, FAST_DTOA_SHORTEST, 0, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("5", buffer.start())); + CHECK_EQ(0, strcmp("5", buffer.begin())); CHECK_EQ(-323, point); double max_double = 1.7976931348623157e308; status = FastDtoa(max_double, FAST_DTOA_SHORTEST, 0, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("17976931348623157", buffer.start())); + CHECK_EQ(0, strcmp("17976931348623157", buffer.begin())); CHECK_EQ(309, point); status = FastDtoa(4294967272.0, FAST_DTOA_SHORTEST, 0, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("4294967272", buffer.start())); + CHECK_EQ(0, strcmp("4294967272", buffer.begin())); CHECK_EQ(10, point); status = FastDtoa(4.1855804968213567e298, FAST_DTOA_SHORTEST, 0, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("4185580496821357", buffer.start())); + CHECK_EQ(0, strcmp("4185580496821357", buffer.begin())); CHECK_EQ(299, point); status = FastDtoa(5.5626846462680035e-309, FAST_DTOA_SHORTEST, 0, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("5562684646268003", buffer.start())); + CHECK_EQ(0, strcmp("5562684646268003", buffer.begin())); CHECK_EQ(-308, point); status = FastDtoa(2147483648.0, FAST_DTOA_SHORTEST, 0, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("2147483648", buffer.start())); + CHECK_EQ(0, strcmp("2147483648", buffer.begin())); CHECK_EQ(10, point); status = FastDtoa(3.5844466002796428e+298, FAST_DTOA_SHORTEST, 0, buffer, &length, &point); if (status) { // Not all FastDtoa variants manage to compute this number. - CHECK_EQ(0, strcmp("35844466002796428", buffer.start())); + CHECK_EQ(0, strcmp("35844466002796428", buffer.begin())); CHECK_EQ(299, point); } @@ -111,7 +107,7 @@ TEST(FastDtoaShortestVariousDoubles) { double v = Double(smallest_normal64).value(); status = FastDtoa(v, FAST_DTOA_SHORTEST, 0, buffer, &length, &point); if (status) { - CHECK_EQ(0, strcmp("22250738585072014", buffer.start())); + CHECK_EQ(0, strcmp("22250738585072014", buffer.begin())); CHECK_EQ(-307, point); } @@ -119,7 +115,7 @@ TEST(FastDtoaShortestVariousDoubles) { v = Double(largest_denormal64).value(); status = FastDtoa(v, FAST_DTOA_SHORTEST, 0, buffer, &length, &point); if (status) { - CHECK_EQ(0, strcmp("2225073858507201", buffer.start())); + CHECK_EQ(0, strcmp("2225073858507201", buffer.begin())); CHECK_EQ(-307, point); } } @@ -135,15 +131,15 @@ TEST(FastDtoaPrecisionVariousDoubles) { status = FastDtoa(1.0, FAST_DTOA_PRECISION, 3, buffer, &length, &point); CHECK(status); CHECK_GE(3, length); - TrimRepresentation(buffer); - CHECK_EQ(0, strcmp("1", buffer.start())); + TrimRepresentation(buffer.begin()); + CHECK_EQ(0, strcmp("1", buffer.begin())); CHECK_EQ(1, point); status = FastDtoa(1.5, FAST_DTOA_PRECISION, 10, buffer, &length, &point); if (status) { CHECK_GE(10, length); - TrimRepresentation(buffer); - CHECK_EQ(0, strcmp("15", buffer.start())); + TrimRepresentation(buffer.begin()); + CHECK_EQ(0, strcmp("15", buffer.begin())); CHECK_EQ(1, point); } @@ -151,56 +147,56 @@ TEST(FastDtoaPrecisionVariousDoubles) { status = FastDtoa(min_double, FAST_DTOA_PRECISION, 5, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("49407", buffer.start())); + CHECK_EQ(0, strcmp("49407", buffer.begin())); CHECK_EQ(-323, point); double max_double = 1.7976931348623157e308; status = FastDtoa(max_double, FAST_DTOA_PRECISION, 7, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("1797693", buffer.start())); + CHECK_EQ(0, strcmp("1797693", buffer.begin())); CHECK_EQ(309, point); status = FastDtoa(4294967272.0, FAST_DTOA_PRECISION, 14, buffer, &length, &point); if (status) { CHECK_GE(14, length); - TrimRepresentation(buffer); - CHECK_EQ(0, strcmp("4294967272", buffer.start())); + TrimRepresentation(buffer.begin()); + CHECK_EQ(0, strcmp("4294967272", buffer.begin())); CHECK_EQ(10, point); } status = FastDtoa(4.1855804968213567e298, FAST_DTOA_PRECISION, 17, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("41855804968213567", buffer.start())); + CHECK_EQ(0, strcmp("41855804968213567", buffer.begin())); CHECK_EQ(299, point); status = FastDtoa(5.5626846462680035e-309, FAST_DTOA_PRECISION, 1, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("6", buffer.start())); + CHECK_EQ(0, strcmp("6", buffer.begin())); CHECK_EQ(-308, point); status = FastDtoa(2147483648.0, FAST_DTOA_PRECISION, 5, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("21475", buffer.start())); + CHECK_EQ(0, strcmp("21475", buffer.begin())); CHECK_EQ(10, point); status = FastDtoa(3.5844466002796428e+298, FAST_DTOA_PRECISION, 10, buffer, &length, &point); CHECK(status); CHECK_GE(10, length); - TrimRepresentation(buffer); - CHECK_EQ(0, strcmp("35844466", buffer.start())); + TrimRepresentation(buffer.begin()); + CHECK_EQ(0, strcmp("35844466", buffer.begin())); CHECK_EQ(299, point); uint64_t smallest_normal64 = V8_2PART_UINT64_C(0x00100000, 00000000); double v = Double(smallest_normal64).value(); status = FastDtoa(v, FAST_DTOA_PRECISION, 17, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("22250738585072014", buffer.start())); + CHECK_EQ(0, strcmp("22250738585072014", buffer.begin())); CHECK_EQ(-307, point); uint64_t largest_denormal64 = V8_2PART_UINT64_C(0x000FFFFF, FFFFFFFF); @@ -208,20 +204,20 @@ TEST(FastDtoaPrecisionVariousDoubles) { status = FastDtoa(v, FAST_DTOA_PRECISION, 17, buffer, &length, &point); CHECK(status); CHECK_GE(20, length); - TrimRepresentation(buffer); - CHECK_EQ(0, strcmp("22250738585072009", buffer.start())); + TrimRepresentation(buffer.begin()); + CHECK_EQ(0, strcmp("22250738585072009", buffer.begin())); CHECK_EQ(-307, point); v = 3.3161339052167390562200598e-237; status = FastDtoa(v, FAST_DTOA_PRECISION, 18, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("331613390521673906", buffer.start())); + CHECK_EQ(0, strcmp("331613390521673906", buffer.begin())); CHECK_EQ(-236, point); v = 7.9885183916008099497815232e+191; status = FastDtoa(v, FAST_DTOA_PRECISION, 4, buffer, &length, &point); CHECK(status); - CHECK_EQ(0, strcmp("7989", buffer.start())); + CHECK_EQ(0, strcmp("7989", buffer.begin())); CHECK_EQ(192, point); } @@ -248,7 +244,7 @@ TEST(FastDtoaGayShortest) { if (length == kFastDtoaMaximalLength) needed_max_length = true; succeeded++; CHECK_EQ(current_test.decimal_point, point); - CHECK_EQ(0, strcmp(current_test.representation, buffer.start())); + CHECK_EQ(0, strcmp(current_test.representation, buffer.begin())); } CHECK_GT(succeeded*1.0/total, 0.99); CHECK(needed_max_length); @@ -281,9 +277,9 @@ TEST(FastDtoaGayPrecision) { if (!status) continue; succeeded++; if (number_digits <= 15) succeeded_15++; - TrimRepresentation(buffer); + TrimRepresentation(buffer.begin()); CHECK_EQ(current_test.decimal_point, point); - CHECK_EQ(0, strcmp(current_test.representation, buffer.start())); + CHECK_EQ(0, strcmp(current_test.representation, buffer.begin())); } // The precomputed numbers contain many entries with many requested // digits. These have a high failure rate and we therefore expect a lower |