NAME log1p, log1pf, log1pl - logarithm of 1 plus argument LIBRARY Math library ( libm , -lm ) SYNOPSIS ... float log1pf(float x ); long double log1pl(long double x ); Feature Test …NAME log1p, log1pf, log1pl - logarithm of 1 plus argument LIBRARY Math library ( libm , -lm ) SYNOPSIS ... float log1pf(float x ); long double log1pl(long double x ); Feature Test …NAME log1p, log1pf, log1pl - logarithm of 1 plus argument LIBRARY Math library ( libm , -lm ) SYNOPSIS ... float log1pf(float x ); long double log1pl(long double x ); Feature Test …