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Fixed legit gripe from c.l.py that math.fmod docs aren't confusing enough. 

FRED, please check my monkey-see-monkey-do Tex fiddling!
This commit is contained in:
Tim Peters 2000-09-16 03:54:24 +00:00
parent 53db8154e6
commit 78fc0b57df
3 changed files with 6 additions and 3 deletions
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4
Doc/lib/libmath.tex
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@ -60,7 +60,9 @@ Return the floor of \var{x} as a real.
\end{funcdesc} \end{funcdesc}
\begin{funcdesc}{fmod}{x, y} \begin{funcdesc}{fmod}{x, y}
Return \code{\var{x} \%\ \var{y}}. Return \code{fmod(\var{x}, \var{y})}, as defined by the platform C library.
Note that the Python expression \code{\var{x} \%\ \var{y}} may not return
the same result.
\end{funcdesc} \end{funcdesc}
\begin{funcdesc}{frexp}{x} \begin{funcdesc}{frexp}{x}

3
Modules/mathmodule.c
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@ -106,7 +106,8 @@ FUNC1(fabs, fabs,
FUNC1(floor, floor, FUNC1(floor, floor,
"floor(x)\n\nReturn the floor of x as a real.") "floor(x)\n\nReturn the floor of x as a real.")
FUNC2(fmod, fmod, FUNC2(fmod, fmod,
"fmod(x,y)\n\nReturn x % y.") "fmod(x,y)\n\nReturn fmod(x, y), according to platform C."
" x % y may differ.")
FUNC2(hypot, hypot, FUNC2(hypot, hypot,
"hypot(x,y)\n\nReturn the Euclidean distance, sqrt(x*x + y*y).") "hypot(x,y)\n\nReturn the Euclidean distance, sqrt(x*x + y*y).")
FUNC1(log, log, FUNC1(log, log,

2
Objects/floatobject.c
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@ -399,7 +399,7 @@ float_divmod(PyFloatObject *v, PyFloatObject *w)
PyFPE_START_PROTECT("divmod", return 0) PyFPE_START_PROTECT("divmod", return 0)
vx = v->ob_fval; vx = v->ob_fval;
mod = fmod(vx, wx); mod = fmod(vx, wx);
/* fmod is typically exact, so vx-mod is *mathemtically* an /* fmod is typically exact, so vx-mod is *mathematically* an
exact multiple of wx. But this is fp arithmetic, and fp exact multiple of wx. But this is fp arithmetic, and fp
vx - mod is an approximation; the result is that div may vx - mod is an approximation; the result is that div may
not be an exact integral value after the division, although not be an exact integral value after the division, although