[thanatos519]

GCC also has libquadmath which provides 128-bit floats by sticking 2 64-bit floats together. More than twice as slow, but extra precision just by changing a type and linking the library.

Works great in XaoS, which is where I like my extra precision, but a deep fractal zoom can consume as much precision as you can muster. Imagine a 64kbit-precision Mandelbrot zoom!

[aragilar]

The main use of libquadmath seems to be to support gfortran. GCC/glibc also support _Float128 and <func>f128, which are nominally part of C, but only GCC implements them as far as I know.