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! Test ieee_support_* inquiry functions
program test_ieee_support
use, intrinsic :: ieee_arithmetic
use, intrinsic :: iso_fortran_env, only: real32, real64
implicit none
real(real32) :: x_sp
real(real64) :: x_dp
logical :: result
print *, "Testing ieee_support_* functions..."
! Test ieee_support_denormal
result = ieee_support_denormal(x_sp)
print *, "ieee_support_denormal(real32) = ", result
if (.not. result) error stop "Should support denormals"
result = ieee_support_denormal(x_dp)
print *, "ieee_support_denormal(real64) = ", result
if (.not. result) error stop "Should support denormals"
! Test ieee_support_divide
result = ieee_support_divide(x_sp)
print *, "ieee_support_divide(real32) = ", result
if (.not. result) error stop "Should support divide"
result = ieee_support_divide(x_dp)
print *, "ieee_support_divide(real64) = ", result
if (.not. result) error stop "Should support divide"
! Test ieee_support_sqrt
result = ieee_support_sqrt(x_sp)
print *, "ieee_support_sqrt(real32) = ", result
if (.not. result) error stop "Should support sqrt"
result = ieee_support_sqrt(x_dp)
print *, "ieee_support_sqrt(real64) = ", result
if (.not. result) error stop "Should support sqrt"
! Test ieee_support_standard
result = ieee_support_standard(x_sp)
print *, "ieee_support_standard(real32) = ", result
if (.not. result) error stop "Should support standard"
result = ieee_support_standard(x_dp)
print *, "ieee_support_standard(real64) = ", result
if (.not. result) error stop "Should support standard"
! Test ieee_support_io
result = ieee_support_io(x_sp)
print *, "ieee_support_io(real32) = ", result
if (.not. result) error stop "Should support I/O"
result = ieee_support_io(x_dp)
print *, "ieee_support_io(real64) = ", result
if (.not. result) error stop "Should support I/O"
! Test ieee_support_rounding
result = ieee_support_rounding(ieee_nearest, x_sp)
print *, "ieee_support_rounding(ieee_nearest, real32) = ", result
if (.not. result) error stop "Should support rounding"
result = ieee_support_rounding(ieee_to_zero, x_dp)
print *, "ieee_support_rounding(ieee_to_zero, real64) = ", result
if (.not. result) error stop "Should support rounding"
! Test ieee_support_datatype
result = ieee_support_datatype(x_sp)
print *, "ieee_support_datatype(real32) = ", result
if (.not. result) error stop "Should support datatype"
result = ieee_support_datatype(x_dp)
print *, "ieee_support_datatype(real64) = ", result
if (.not. result) error stop "Should support datatype"
print *, "All ieee_support_* tests passed!"
end program test_ieee_support
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