Floating-Point(G.3.6)

(6.1.2.5)The representations and sets of values of the various types of floating-point numbers:

Table B-2 Values for a float

float
Bits	32
Min	1.17549435E-38
Max	3.40282347E+38
Epsilon	1.19209290E-07

Table B-3 Values for a double

double
Bits	64
Min	2.2250738585072014E-308
Max	1.7976931348623157E+308
Epsilon	2.2204460492503131E-16

Table B-4 Values for long double

long double
Bits	128 (SPARC) 80 (Intel)
Min	3.362103143112093506262677817321752603E-4932 (SPARC) 3.3621031431120935062627E-4932 (Intel)
Max	1.189731495357231765085759326628007016E+4932 (SPARC) 1.1897314953572317650213E4932 (Intel)
Epsilon	1.925929944387235853055977942584927319E-34 (SPARC) 1.0842021724855044340075E-19 (Intel)

(6.2.1.3)The direction of truncation when an integral number is converted to a floating-point number that cannot exactly represent the original value:

Numbers are rounded to the nearest value that can be represented.

(6.2.1.4)The direction of truncation or rounding when a floating- point number is converted to a narrower floating-point number:

Numbers are rounded to the nearest value that can be represented.