Symbol: __aeabi_dcmpun
lib/libc/arch/arm/softfloat/__aeabi_dcmpun.c
16
int __aeabi_dcmpun(float64, float64);
sys/arch/arm/include/aeabi.h
64
int __aeabi_dcmpun(double, double) __aapcs; // result (1, 0) denotes (?, <=>) [2], use for C99 isunordered()