log10            3024 ext/bigdecimal/bigdecimal.c 	VALUE log10, vexpo, dy;
log10            3025 ext/bigdecimal/bigdecimal.c 	log10 = BigMath_s_log(klass, INT2FIX(10), vprec);
log10            3027 ext/bigdecimal/bigdecimal.c 	dy = BigDecimal_mult(log10, vexpo);
log10             408 math.c         # define log10(x) ((x) < 0.0 ? nan("") : log10(x))
log10             477 math.c             return log10(x)/log10(2.0);
log10             562 math.c             return DBL2NUM(log10(d) + numbits * log10(2)); /* log10(d * 2 ** numbits) */