APPENDIX B FLOATING-POINT OPERATION FUNCTION
It is only when the "-fpu" option is specified that the compiler outputs floating-point arithmetic instructions.
If the "-chkfpu" option is specified in the assembler, the floating-point arithmetic instructions written in a program are detected as warning.
Make settings that include "FPSW" for Task context register (context) in System Information (system). As a result, the FPSW register is managed independently in each task.
The initial FPSW of task is initialized by the value according to compiler options to be used. For details, refer to "3.2.4 Internal processing of task".