* ieee/ieee_arithmetic.F90: Add IEEE_MIN_NUM, IEEE_MAX_NUM,
IEEE_MIN_NUM_MAG, and IEEE_MAX_NUM_MAG functions.
gcc/fortran/
* f95-lang.cc (gfc_init_builtin_functions): Add fmax() and
fmin() built-ins, and their variants.
* mathbuiltins.def: Add FMAX and FMIN built-ins.
* trans-intrinsic.cc (conv_intrinsic_ieee_minmax): New function.
(gfc_conv_ieee_arithmetic_function): Handle IEEE_MIN_NUM and
IEEE_MAX_NUM functions.
gcc/testsuite/
* gfortran.dg/ieee/minmax_1.f90: New test.