It seems like Swift has broken a lot of the export functionality. Some of the exporting system was actually a bug but resulting in useful functionality (i.e like importing C Macros as enums). But once fixed we lost a lot of it.
*___________________________________* *James⎥Head of Trolls* *ja...@supmenow.com <ja...@supmenow.com>⎥supmenow.com <http://supmenow.com>* *Sup* *Runway East * *10 Finsbury Square* *London* * EC2A 1AF * On 6 July 2016 at 07:23, Antonino Ficarra via swift-users < swift-users@swift.org> wrote: > long double math.h functions appear to not be exported in swift. I don’t > know why. > > This horrible hack works: > > // in f80.h > extern void sqrt_f80( void *result, const void *v ); > extern void pow_f80( void *result, const void *v, const void *e ); > ... > > // in f80.c > void sqrt_f80( void *result, const void *v ) { *(long double *)result = > sqrtl( *(const long double *)v ); } > void pow_f80( void *result, const void *v, const void *e ) { *(long double > *)result > = powl( *(const long double *)v,*(const long double *)e ); } > … > > // in f80.swift > func sqrt( _ a:Float80 ) -> Float80 { var result = Float80(); var v = a; > sqrt_f80( &result, &v ); return result; } > func pow( _ a:Float80,_ e:Float80 ) -> Float80 { var result = Float80(); > var v1 = a; var v2 = e; pow_f80( &result, &v1, &v2 ); return result; } > … > > Sorry for my bad english. > > > Il giorno 05 lug 2016, alle ore 19:44, Jeff Kelley via swift-users < > swift-users@swift.org> ha scritto: > > Hello all, > > I’m using Xcode 8.0 and Swift 3 on OS X 10.11, and I’m trying to use powl > in an OS X Playground. I see the definition of the pow-related functions > in math.h here: > > extern float powf(float, float); > extern double pow(double, double); > extern long double powl(long double, long double); > > But the Swift-imported version at Darwin.C.math looks like this: > > public func powf(_: Float, _: Float) -> Float > public func pow(_: Double, _: Double) -> Double > > Where did powl go? > > > Jeff Kelley > > slauncha...@gmail.com | @SlaunchaMan <https://twitter.com/SlaunchaMan> | > jeffkelley.org > > _______________________________________________ > swift-users mailing list > swift-users@swift.org > https://lists.swift.org/mailman/listinfo/swift-users > > > > > _______________________________________________ > swift-users mailing list > swift-users@swift.org > https://lists.swift.org/mailman/listinfo/swift-users > >
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