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  r76861 | mark.dickinson | 2009-12-16 20:13:40 +0000 (Wed, 16 Dec 2009) | 3 lines

  Issue #3366: Add expm1 function to math module.  Thanks Eric Smith for
  testing on Windows.
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This commit is contained in:
Mark Dickinson 2009-12-16 20:23:42 +00:00
parent ef1992b9fb
commit 664b511c0a
13 changed files with 162 additions and 10 deletions
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6
Modules/mathmodule.c
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@ -53,6 +53,7 @@ raised for division by zero and mod by zero.
*/
#include "Python.h"
#include "_math.h"
#include "longintrepr.h" /* just for SHIFT */
#ifdef _OSF_SOURCE
@ -722,6 +723,10 @@ FUNC1(cosh, cosh, 1,
"cosh(x)\n\nReturn the hyperbolic cosine of x.")
FUNC1(exp, exp, 1,
"exp(x)\n\nReturn e raised to the power of x.")
FUNC1(expm1, m_expm1, 1,
"expm1(x)\n\nReturn exp(x)-1.\n"
"This function avoids the loss of precision involved in the direct "
"evaluation of exp(x)-1 for small x.")
FUNC1(fabs, fabs, 0,
"fabs(x)\n\nReturn the absolute value of the float x.")
@ -1493,6 +1498,7 @@ static PyMethodDef math_methods[] = {
{"cosh", math_cosh, METH_O, math_cosh_doc},
{"degrees", math_degrees, METH_O, math_degrees_doc},
{"exp", math_exp, METH_O, math_exp_doc},
{"expm1", math_expm1, METH_O, math_expm1_doc},
{"fabs", math_fabs, METH_O, math_fabs_doc},
{"factorial", math_factorial, METH_O, math_factorial_doc},
{"floor", math_floor, METH_O, math_floor_doc},