diff options
| -rw-r--r-- | ChangeLog | 13 | ||||
| -rw-r--r-- | math/libm-test.c | 125 | ||||
| -rw-r--r-- | sysdeps/libm-ieee754/e_j0.c | 6 |
3 files changed, 138 insertions, 6 deletions
diff --git a/ChangeLog b/ChangeLog index a0d3874014..c760df749d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,4 +1,15 @@ -1999-06-02 Jakub Jelinek <jj@ultra.linux.cz> +1999-06-02 Andreas Jaeger <aj@arthur.rhein-neckar.de> + + * sysdeps/libm-ieee754/e_j0.c (__ieee754_y0): Fix array indices. + Patch by mhagger@dera.gov.uk [PR libc/1145]. + + * math/libm-test.c (y1_test): New tests. + (y0_test): Likewise. + (j1_test): Likewise. + (j0_test): Likewise. + (main): Added new tests. + +1999-06-02 Jakub Jelinek <jj@ultra.linux.cz> * stdlib/longlong.h: Define UDIV_TIME on sparc64. * sysdeps/unix/sysv/linux/sparc/sparc64/sigpending.c: New file. diff --git a/math/libm-test.c b/math/libm-test.c index 83975fc791..b5a9bc1408 100644 --- a/math/libm-test.c +++ b/math/libm-test.c @@ -45,11 +45,13 @@ frexp, gamma, hypot, ilogb, isfinite, isinf, isnan, isnormal, isless, islessequal, isgreater, isgreaterequal, islessgreater, isunordered, + j0, j1, ldexp, lgamma, log, log10, log1p, log2, logb, modf, nearbyint, nextafter, pow, remainder, remquo, rint, lrint, llrint, round, lround, llround, - scalb, scalbn, signbit, sin, sincos, sinh, sqrt, tan, tanh, tgamma, trunc + scalb, scalbn, signbit, sin, sincos, sinh, sqrt, tan, tanh, tgamma, trunc, + y0, y1 and for the following complex math functions: cabs, cacos, cacosh, carg, casin, casinh, catan, catanh, @@ -57,7 +59,7 @@ At the moment the following functions aren't tested: conj, cproj, cimag, creal, drem, - j0, j1, jn, y0, y1, yn, + jn, yn, significand, nan @@ -5496,6 +5498,119 @@ fma_test (void) INVALID_EXCEPTION); } +static void +j0_test (void) +{ + errno = 0; + FUNC(j0) (0); + if (errno == ENOSYS) + /* Function not implemented. */ + return; + + /* j0 is the Bessel function of the first kind of order 0 */ + check_isnan ("j0 (NaN) = NaN", FUNC(j0) (nan_value)); + + check ("j0 (-1.0) = 0.76519...", FUNC(j0) (-1.0), 0.76519768655796655145); + check ("j0 (0) = 1", FUNC(j0) (0.0), 1.0); + check ("j0 (0.1) = 0.99750...", FUNC(j0) (0.1), 0.99750156206604003228); + check ("j0 (0.7) = 0.88120...", FUNC(j0) (0.7), 0.88120088860740528084); + check ("j0 (1.0) = 0.76519...", FUNC(j0) (1.0), 0.76519768655796655145); + check ("j0 (1.5) = 0.51182...", FUNC(j0) (1.5), 0.51182767173591812875); + check_eps ("j0 (2.0) = 0.22389...", FUNC(j0) (2.0), 0.22389077914123566805, + CHOOSE(0, 3e-17, 1.5e-8)); + check_eps ("j0 (8.0) = 0.17165...", FUNC(j0) (8.0), 0.17165080713755390609, + CHOOSE(0, 0, 1.5e-8)); + check_eps ("j0 (10.0) = -0.24593...", FUNC(j0) (10.0), -0.24593576445134833520, + CHOOSE(0, 6e-17, 1.5e-8)); +} + +static void +j1_test (void) +{ + errno = 0; + FUNC(j1) (0); + if (errno == ENOSYS) + /* Function not implemented. */ + return; + + /* j is the Bessel function of the first kind of order 1 */ + check_isnan ("j1 (NaN) = NaN", FUNC(j0) (nan_value)); + + check ("j1 (-1.0) = -0.44005...", FUNC(j1) (-1.0), -0.44005058574493351596); + check ("j1 (0) = 0", FUNC(j1) (0.0), 0.0); + check ("j1 (0.1) = 0.049937...", FUNC(j1) (0.1), 0.049937526036241997556); + check ("j1 (0.7) = 0.32899...", FUNC(j1) (0.7), 0.32899574154005894785); + check ("j1 (1.0) = 0.44005...", FUNC(j1) (1.0), 0.44005058574493351596); + check ("j1 (1.5) = 0.55793...", FUNC(j1) (1.5), 0.55793650791009964199); + check_eps ("j1 (2.0) = 0.57672...", FUNC(j1) (2.0), 0.57672480775687338720, + CHOOSE(0, 2e-16, 0)); + check_eps ("j1 (8.0) = 0.23463...", FUNC(j1) (8.0), 0.23463634685391462438, + CHOOSE(0, 0, 1.5e-8)); + check_eps ("j1 (10.0) = 0.04347...", FUNC(j1) (10.0), 0.043472746168861436670, + CHOOSE(0, 7e-18, 3.8e-9)); +} + + +static void +y0_test (void) +{ + errno = 0; + FUNC(y0) (1); + if (errno == ENOSYS) + /* Function not implemented. */ + return; + + /* y0 is the Bessel function of the second kind of order 0 */ + check_isinfn ("y0 (-1.0) = -inf", FUNC(y0) (-1.0)); + check_isinfn ("y0 (0) = -inf", FUNC(y0) (0.0)); + check_isnan ("y0 (NaN) = NaN", FUNC(y0) (nan_value)); + + check_eps ("y0 (0.1) = -1.53423...", FUNC(y0) (0.1), -1.5342386513503668441, + CHOOSE(0, 3e-16, 1.2e-7)); + check_eps ("y0 (0.7) = -0.19066...", FUNC(y0) (0.7), -0.19066492933739506743, + CHOOSE(0, 6e-17, 1.5e-8)); + check_eps ("y0 (1.0) = 0.08825...", FUNC(y0) (1.0), 0.088256964215676957983, + CHOOSE(0, 2e-17, 7.5e-9)); + check_eps ("y0 (1.5) = 0.38244...", FUNC(y0) (1.5), 0.38244892379775884396, + CHOOSE(0, 6e-17, 3.0e-8)); + check_eps ("y0 (2.0) = 0.51037...", FUNC(y0) (2.0), 0.51037567264974511960, + CHOOSE(0, 2e-16 ,0)); + check_eps ("y0 (8.0) = 0.22352...", FUNC(y0) (8.0), 0.22352148938756622053, + CHOOSE(0, 3e-17, 1.5e-8)); + check_eps ("y0 (10.0) = 0.05567...", FUNC(y0) (10.0), 0.055671167283599391424, + CHOOSE(0, 0, 3.8e-9)); +} + + +static void +y1_test (void) +{ + errno = 0; + FUNC(y1) (1); + if (errno == ENOSYS) + /* Function not implemented. */ + return; + + /* y1 is the Bessel function of the second kind of order 1 */ + check_isinfn ("y1 (-1.0) = -inf", FUNC(y1) (-1.0)); + check_isinfn ("y1 (0) = -inf", FUNC(y1) (0.0)); + check_isnan ("y1 (NaN) = NaN", FUNC(y1) (nan_value)); + + check_eps ("y1 (0.1) = -6.45895...", FUNC(y1) (0.1), -6.4589510947020269877, + CHOOSE(0, 9e-16, 4.8e-7)); + check_eps ("y1 (0.7) = -1.10324...", FUNC(y1) (0.7), -1.1032498719076333697, + CHOOSE(0, 3e-16, 0)); + check_eps ("y1 (1.0) = -0.78121...", FUNC(y1) (1.0), -0.78121282130028871655, + CHOOSE(0, 2e-16, 0)); + check ("y1 (1.5) = -0.41230...", FUNC(y1) (1.5), -0.41230862697391129595); + check_eps ("y1 (2.0) = -0.10703...", FUNC(y1) (2.0), -0.10703243154093754689, + CHOOSE(0, 2e-17, 1.5e-8)); + check_eps ("y1 (8.0) = -0.15806...", FUNC(y1) (8.0), -0.15806046173124749426, + CHOOSE(0, 0, 3.0e-8)); + check_eps ("y1 (10.0) = 0.24901...", FUNC(y1) (10.0), 0.24901542420695388392, + CHOOSE(0, 9e-17, 3.0e-8)); +} + /* Tests for the comparison macros */ typedef enum { is_less, is_equal, is_greater, is_unordered } comp_result; @@ -5994,6 +6109,12 @@ main (int argc, char *argv[]) /* multiply and add */ fma_test (); + /* Bessel functions */ + j0_test (); + j1_test (); + y0_test (); + y1_test (); + /* special tests */ identities (); inverse_functions (); diff --git a/sysdeps/libm-ieee754/e_j0.c b/sysdeps/libm-ieee754/e_j0.c index ff4c73bceb..55e8294bb9 100644 --- a/sysdeps/libm-ieee754/e_j0.c +++ b/sysdeps/libm-ieee754/e_j0.c @@ -234,9 +234,9 @@ V[] = {1.27304834834123699328e-02, /* 0x3F8A1270, 0x91C9C71A */ u2 = U[2]+z*U[3]; z4=z2*z2; u3 = U[4]+z*U[5]; z6=z4*z2; u = u1 + z2*u2 + z4*u3 + z6*U[6]; - v1 = one+z*V[1]; - v2 = V[2]+z*V[3]; - v = v1 + z2*v2 + z4*V[4]; + v1 = one+z*V[0]; + v2 = V[1]+z*V[2]; + v = v1 + z2*v2 + z4*V[3]; #endif return(u/v + tpi*(__ieee754_j0(x)*__ieee754_log(x))); } |