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Re: new __builtin_choose_type (patch)
On Tue, 2001-10-02 at 15:57, Phil Edwards wrote:
> On Tue, Oct 02, 2001 at 12:29:35PM -0700, Dale Johannesen wrote:
> > OTOH, overloading is in C99 already for the math lib
> > functions, isn't it?
nope. tgmath.h, compliments of geoff:
/* This is ugly but unless gcc gets appropriate builtins we have to do
something like this. Don't ask how it works. */
/* 1 if 'type' is a floating type, 0 if 'type' is an integer type.
Allows for _Bool. Expands to an integer constant expression. */
# define __floating_type(type) (((type) 0.25) && ((type) 0.25 - 1))
/* The tgmath real type for T, where E is 0 if T is an integer type and
1 for a floating type. */
# define __tgmath_real_type_sub(T, E) \
__typeof__(*(0 ? (__typeof__ (0 ? (double *) 0 : (void *) (E))) 0 \
: (__typeof__ (0 ? (T *) 0 : (void *) (!(E)))) 0))
with my proposed builtin_choose_type we could simplify this a lot.
> I don't believe so.
> If ye love wealth greater than liberty, the tranquility of servitude greater
> than the animating contest for freedom, go home and leave us in peace. We seek
> not your counsel, nor your arms. Crouch down and lick the hand that feeds you;
> and may posterity forget that ye were our countrymen. - Samuel Adams
Aldy Hernandez E-mail: email@example.com
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