u-boot_mod/toolchain/include/bits/float.h

#define FLT_EVAL_METHOD 0

#define LDBL_TRUE_MIN 4.94065645841246544177e-324L
#define LDBL_MIN 2.22507385850720138309e-308L
#define LDBL_MAX 1.79769313486231570815e+308L
#define LDBL_EPSILON 2.22044604925031308085e-16L

#define LDBL_MANT_DIG 53
#define LDBL_MIN_EXP (-1021)
#define LDBL_MAX_EXP 1024

#define LDBL_DIG 15
#define LDBL_MIN_10_EXP (-307)
#define LDBL_MAX_10_EXP 308

#define DECIMAL_DIG 17