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Diffstat (limited to 'test/builtins/Unit/floatdixf_test.c')
| -rw-r--r-- | test/builtins/Unit/floatdixf_test.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/test/builtins/Unit/floatdixf_test.c b/test/builtins/Unit/floatdixf_test.c new file mode 100644 index 000000000000..337666426318 --- /dev/null +++ b/test/builtins/Unit/floatdixf_test.c @@ -0,0 +1,144 @@ +//===-- floatdixf_test.c - Test __floatdixf -------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file tests __floatdixf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// + +#include "int_lib.h" +#include <stdio.h> + +#if HAS_80_BIT_LONG_DOUBLE +// Returns: convert a to a long double, rounding toward even. + +// Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits +// di_int is a 64 bit integral type + +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee | +// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm + +long double __floatdixf(di_int a); + +int test__floatdixf(di_int a, long double expected) +{ + long double x = __floatdixf(a); + if (x != expected) + printf("error in __floatdixf(%llX) = %LA, expected %LA\n", + a, x, expected); + return x != expected; +} + +char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0}; +char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0}; +char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0}; +#endif + +int main() +{ +#if HAS_80_BIT_LONG_DOUBLE + if (test__floatdixf(0, 0.0)) + return 1; + + if (test__floatdixf(1, 1.0)) + return 1; + if (test__floatdixf(2, 2.0)) + return 1; + if (test__floatdixf(20, 20.0)) + return 1; + if (test__floatdixf(-1, -1.0)) + return 1; + if (test__floatdixf(-2, -2.0)) + return 1; + if (test__floatdixf(-20, -20.0)) + return 1; + + if (test__floatdixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62)) + return 1; + if (test__floatdixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62)) + return 1; + if (test__floatdixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62)) + return 1; + if (test__floatdixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62)) + return 1; + + if (test__floatdixf(0x8000008000000000LL, -0x1.FFFFFEp+62)) + return 1; + if (test__floatdixf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62)) + return 1; + if (test__floatdixf(0x8000010000000000LL, -0x1.FFFFFCp+62)) + return 1; + if (test__floatdixf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62)) + return 1; + + if (test__floatdixf(0x8000000000000000LL, -0x1.000000p+63)) + return 1; + if (test__floatdixf(0x8000000000000001LL, -0x1.FFFFFFFFFFFFFFFCp+62L)) + return 1; + + if (test__floatdixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50)) + return 1; + + if (test__floatdixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50)) + return 1; + if (test__floatdixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50)) + return 1; + if (test__floatdixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50)) + return 1; + if (test__floatdixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50)) + return 1; + if (test__floatdixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50)) + return 1; + + if (test__floatdixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50)) + return 1; + if (test__floatdixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50)) + return 1; + if (test__floatdixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50)) + return 1; + if (test__floatdixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50)) + return 1; + if (test__floatdixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50)) + return 1; + + if (test__floatdixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdixf(0x023479FD0E092DA1LL, 0x8.D1E7F43824B684p+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DB0LL, 0x8.D1E7f43824B6Cp+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DB8LL, 0x8.D1E7F43824B6Ep+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DB6LL, 0x8.D1E7F43824B6D8p+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DBFLL, 0x8.D1E7F43824B6FCp+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DC1LL, 0x8.D1E7F43824B704p+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DC7LL, 0x8.D1E7F43824B71Cp+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DC8LL, 0x8.D1E7F43824B72p+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DCFLL, 0x8.D1E7F43824B73Cp+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DD0LL, 0x8.D1E7F43824B74p+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DD1LL, 0x8.D1E7F43824B744p+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DD8LL, 0x8.D1E7F43824B76p+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DDFLL, 0x8.D1E7F43824B77Cp+54L)) + return 1; + if (test__floatdixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57)) + return 1; + +#else + printf("skipped\n"); +#endif + return 0; +} |