Problems with <tgmath.h>

[Andreas Jaeger]

>>>>> Daniel Jacobowitz writes:

 > More troublesome: <tgmath.h> generates calls to func, funcf, and funcl
 > for each math function, but without __USE_MISC || __USE_ISOC9X, funcf
 > does not get defined.  Also, funcl does not get defined if
 > -D__NO_LONG_DOUBLE_MATH, which is always set on powerpc, at least.

 > This produces wrong output from calling trunc() on a float without
 > __USE_MISC || __USE_ISOC9X, because the float is converted incorrectly.

tgmath.h is part of ISO C99 - therefore you should use _ISOC9X_SOURCE
when including the file.

Andreas
-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.rhein-neckar.de