October 16, 2004 overload resolution on double-edged types | ||||
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tested on windows XP, dmd 0.102 maybe not a new one, but could't find the post.. pow(real, real), pow(real, uint) and pow(real, int) are overloaded in std.math, and the following code fails to be compiled. <code> import std.math; void main() { /* * want to use pow(real, uint) * because this one is the fastest */ pow(5.0, 6u); // line9 } </code> the compiler message: bug.d(9): function pow overloads real(real x,uint n) and real(real x,real y) both match argument list for pow dmd also fails to compile the following alternatives. pow(5.0, 6); pow(5.0, cast(uint) 6); pow(5.0, cast(uint)(6)); pow(5.0, e); // uint e = 6; (declared ahead) you can successfully compile pow(5.0, 6.0) because 6.0 can never be interpreted as uint or int. but there seems to be no way to inform dmd that a specified number is no real, no int, but an uint. tetsuya |
October 29, 2004 Re: overload resolution on double-edged types | ||||
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Posted in reply to tetsuya | added to dstress: svn://svn.kuehne.cn/dstress/run/overload_08.d . svn://svn.kuehne.cn/dstress/run/overload_11.d Thomas In article <ckrq8e$1cnl$1@digitaldaemon.com>, tetsuya says... > >pow(real, real), pow(real, uint) and pow(real, int) are >overloaded in std.math, and the following code fails to >be compiled. > > ><code> >import std.math; > >void main() >{ >/* >* want to use pow(real, uint) >* because this one is the fastest >*/ >pow(5.0, 6u); // line9 >} ></code> > > >the compiler message: >bug.d(9): function pow overloads real(real x,uint n) and >real(real x,real y) both match argument list for pow > > >dmd also fails to compile the following alternatives. > >pow(5.0, 6); >pow(5.0, cast(uint) 6); >pow(5.0, cast(uint)(6)); >pow(5.0, e); // uint e = 6; (declared ahead) > > >you can successfully compile pow(5.0, 6.0) because 6.0 >can never be interpreted as uint or int. but there seems >to be no way to inform dmd that a specified number is >no real, no int, but an uint. > > >tetsuya |
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