gammas and errors functions are available from the C standard
library. it would be nice to have them in the math module.
or is there any reason not to include them?
diff -u1 /usr/local/src/Python-3.0b1/Modules/mathmodule.c mathmodule.c
<diff>
--- /usr/local/src/Python-3.0b1/Modules/mathmodule.c 2008-06-18
13:04:31.000000000 +0300
+++ mathmodule.c 2008-07-14 23:30:17.000000000 +0300
@@ -329,2 +329,7 @@
"cosh(x)\n\nReturn the hyperbolic cosine of x.")
+FUNC1(erf, erf, 0,
+ "erf(x)\n\nReturn the error function of x.")
+FUNC1(erfc, erfc, 0,
+ "erfc(x)\n\nReturn the complementary error function of x.\n\
+ A domain error may occur if x is too large.")
FUNC1(exp, exp, 1,
@@ -355,2 +360,6 @@
+FUNC1(lgamma, lgamma, 0,
+ "lgamma(x)\n\nReturn the natural logarithm of the absolute\n\
+ value of the gamma function of x.\n\
+ A domain error occurs if x is a negative integer or zero.")
FUNC1(log1p, log1p, 1,
@@ -368,2 +377,6 @@
"tanh(x)\n\nReturn the hyperbolic tangent of x.")
+FUNC1(tgamma, tgamma, 0,
+ "tgamma(x)\n\nReturn the gamma function of x.\n\
+ A domain error occurs if x is a negative integer or zero\n\
+ or if the magnitude of x is too large or too small.")
@@ -1075,2 +1088,4 @@
{"degrees", math_degrees, METH_O, math_degrees_doc},
+ {"erf", math_erf, METH_O, math_erf_doc},
+ {"erfc", math_erfc, METH_O, math_erfc_doc},
{"exp", math_exp, METH_O, math_exp_doc},
@@ -1085,2 +1100,3 @@
{"ldexp", math_ldexp, METH_VARARGS, math_ldexp_doc},
+ {"lgamma", math_lgamma, METH_O, math_lgamma_doc},
{"log", math_log, METH_VARARGS, math_log_doc},
@@ -1097,2 +1113,3 @@
{"tanh", math_tanh, METH_O, math_tanh_doc},
+ {"tgamma", math_tgamma, METH_O, math_tgamma_doc},
{"trunc", math_trunc, METH_O, math_trunc_doc},
</diff>
nirinA
--
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