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-rw-r--r--ChangeLog13
-rw-r--r--math/libm-test.c125
-rw-r--r--sysdeps/libm-ieee754/e_j0.c6
3 files changed, 138 insertions, 6 deletions
diff --git a/ChangeLog b/ChangeLog
index a0d3874..c760df7 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 83975fc..b5a9bc1 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 ff4c73b..55e8294 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)));
}
generated by cgit v1.1 at 2024-11-29 08:28:38 +0000