diff options
Diffstat (limited to 'math')
| -rw-r--r-- | math/Makefile | 2 | ||||
| -rw-r--r-- | math/Versions | 1 | ||||
| -rw-r--r-- | math/bits/mathcalls.h | 6 | ||||
| -rw-r--r-- | math/libm-test.c | 67 |
4 files changed, 39 insertions, 37 deletions
diff --git a/math/Makefile b/math/Makefile index 9f2d3367e5..4bd9580084 100644 --- a/math/Makefile +++ b/math/Makefile @@ -49,7 +49,7 @@ libm-calls = e_acos e_acosh e_asin e_atan2 e_atanh e_cosh e_exp e_fmod \ s_modf s_nextafter s_nextafterx s_rint s_scalbn s_scalbln \ s_significand s_sin s_tan s_tanh w_acos w_acosh w_asin \ w_atan2 w_atanh w_cosh w_drem w_exp w_exp2 w_exp10 w_fmod \ - w_gamma w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r \ + w_tgamma w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r \ w_log w_log10 w_pow w_remainder w_scalb w_sinh w_sqrt \ s_signbit s_fpclassify s_fmax s_fmin s_fdim s_nan s_trunc \ s_remquo s_log2 s_exp2 s_round s_nearbyint s_sincos \ diff --git a/math/Versions b/math/Versions index 8864ef1b87..580fa253aa 100644 --- a/math/Versions +++ b/math/Versions @@ -111,6 +111,7 @@ libm { scalbln; scalblnf; scalblnl; sincos; sincosf; sincosl; trunc; truncf; truncl; + tgamma; tgammaf; tgammal; # complex functions cabs; cabsf; cabsl; diff --git a/math/bits/mathcalls.h b/math/bits/mathcalls.h index 30bbb7c0aa..a94707ffe3 100644 --- a/math/bits/mathcalls.h +++ b/math/bits/mathcalls.h @@ -224,8 +224,12 @@ __MATHCALL (yn,, (int, _Mdouble_)); /* Error, gamma, and Bessel functions. */ __MATHCALL (erf,, (_Mdouble_)); __MATHCALL (erfc,, (_Mdouble_)); -__MATHCALL (gamma,, (_Mdouble_)); __MATHCALL (lgamma,, (_Mdouble_)); +__MATHCALL (tgamma,, (_Mdouble_)); +#endif + +#if defined __USE_MISC || defined __USE_XOPEN +__MATHCALL (gamma,, (_Mdouble_)); #endif #ifdef __USE_MISC diff --git a/math/libm-test.c b/math/libm-test.c index 52358d5b34..95d285e1c7 100644 --- a/math/libm-test.c +++ b/math/libm-test.c @@ -51,7 +51,7 @@ modf, nearbyint, nextafter, pow, remainder, remquo, rint, lrint, llrint, round, lround, llround, - scalb, scalbn, signbit, sin, sincos, sinh, sqrt, tan, tanh, trunc + scalb, scalbn, signbit, sin, sincos, sinh, sqrt, tan, tanh, tgamma, trunc and for the following complex math functions: cabs, cacos, cacosh, carg, casin, casinh, catan, catanh, @@ -1413,15 +1413,9 @@ signbit_test (void) } -/* - gamma has different semantics depending on _LIB_VERSION: - if _LIB_VERSION is _SVID, gamma is just an alias for lgamma, - otherwise gamma is the real gamma function as definied in ISO C 9X. -*/ static void gamma_test (void) { - int save_lib_version = _LIB_VERSION; errno = 0; FUNC(gamma) (1); if (errno == ENOSYS) @@ -1430,14 +1424,12 @@ gamma_test (void) feclearexcept (FE_ALL_EXCEPT); - _LIB_VERSION = _SVID_; - check_isinfp ("gamma (+inf) == +inf", FUNC(gamma) (plus_infty)); - check_exc ("gamma (0) == HUGE plus divide by zero exception", - FUNC(gamma) (0), HUGE, DIVIDE_BY_ZERO_EXCEPTION); + check_isinfp_exc ("gamma (0) == +inf plus divide by zero exception", + FUNC(gamma) (0), DIVIDE_BY_ZERO_EXCEPTION); - check_exc ("gamma (x) == HUGE plus divide by zero exception for integer x <= 0", - FUNC(gamma) (-3), HUGE, DIVIDE_BY_ZERO_EXCEPTION); + check_isinfp_exc ("gamma (x) == +inf plus divide by zero exception for integer x <= 0", + FUNC(gamma) (-3), DIVIDE_BY_ZERO_EXCEPTION); check_isnan_exc ("gamma (-inf) == NaN plus invalid exception", FUNC(gamma) (minus_infty), INVALID_EXCEPTION); @@ -1459,39 +1451,43 @@ gamma_test (void) FUNC(log) (2*FUNC(sqrt) (M_PIl)), CHOOSE (0, 1e-15, 0)); check_int ("gamma (-0.5) sets signgam to -1", signgam, -1); +} - _LIB_VERSION = _IEEE_; +static void +tgamma_test (void) +{ + errno = 0; + FUNC(tgamma) (1); + if (errno == ENOSYS) + /* Function not implemented. */ + return; + feclearexcept (FE_ALL_EXCEPT); - check_isinfp ("gamma (+inf) == +inf", FUNC(gamma) (plus_infty)); - check_isnan_exc ("gamma (0) == NaN plus invalid exception", - FUNC(gamma) (0), INVALID_EXCEPTION); - check_isnan_exc_ext ("gamma (x) == NaN plus invalid exception for integer x <= 0", - FUNC(gamma) (-2), INVALID_EXCEPTION, -2); - check_isnan_exc ("gamma (-inf) == NaN plus invalid exception", - FUNC(gamma) (minus_infty), INVALID_EXCEPTION); + check_isinfp ("tgamma (+inf) == +inf", FUNC(tgamma) (plus_infty)); + check_isnan_exc ("tgamma (0) == NaN plus invalid exception", + FUNC(tgamma) (0), INVALID_EXCEPTION); + + check_isnan_exc_ext ("tgamma (x) == NaN plus invalid exception for integer x <= 0", + FUNC(tgamma) (-2), INVALID_EXCEPTION, -2); + check_isnan_exc ("tgamma (-inf) == NaN plus invalid exception", + FUNC(tgamma) (minus_infty), INVALID_EXCEPTION); #ifdef TODO - check_eps ("gamma (0.5) == sqrt(pi)", FUNC(gamma) (0.5), FUNC(sqrt) (M_PIl), - CHOOSE (0, 5e-16, 2e-7)); + check_eps ("tgamma (0.5) == sqrt(pi)", FUNC(tgamma) (0.5), + FUNC(sqrt) (M_PIl), CHOOSE (0, 5e-16, 2e-7)); #endif - check_eps ("gamma (-0.5) == -2*sqrt(pi)", FUNC(gamma) (-0.5), + check_eps ("tgamma (-0.5) == -2*sqrt(pi)", FUNC(tgamma) (-0.5), -2*FUNC(sqrt) (M_PIl), CHOOSE (0, 5e-16, 3e-7)); - check ("gamma (1) == 1", FUNC(gamma) (1), 1); - check ("gamma (4) == 6", FUNC(gamma) (4), 6); + check ("tgamma (1) == 1", FUNC(tgamma) (1), 1); + check ("tgamma (4) == 6", FUNC(tgamma) (4), 6); - check_eps ("gamma (0.7) == 1.29805...", FUNC(gamma) (0.7), + check_eps ("tgamma (0.7) == 1.29805...", FUNC(tgamma) (0.7), 1.29805533264755778568L, CHOOSE(0, 3e-16, 2e-7)); - check ("gamma (1.2) == 0.91816...", FUNC(gamma) (1.2), 0.91816874239976061064L); - - check_isnan_exc ("gamma (0.0) == NaN plus invalid exception", - FUNC(gamma) (0.0), INVALID_EXCEPTION); - check_isnan_exc ("gamma (-1.0) == NaN plus invalid exception", - FUNC(gamma) (-1.0), INVALID_EXCEPTION); - - _LIB_VERSION = save_lib_version; + check ("tgamma (1.2) == 0.91816...", FUNC(tgamma) (1.2), + 0.91816874239976061064L); } @@ -6012,6 +6008,7 @@ main (int argc, char *argv[]) erf_test (); erfc_test (); gamma_test (); + tgamma_test (); lgamma_test (); /* nearest integer functions */ |