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Update to float.h Header File

In Chapter 2, "Function Categories," in the section titled, "Mathematical Functions," replace the contents of the float.h header file with the following information:
/*
*
* This header file defines several esoteric attributes of the
* 370 floating-point implementation.  The attributes apply to
* the default floating-point format, as specified by a compiler
* option.
*
*/

#if _O_BFP == 0

#define FLT_RADIX 16         /* hardware float radix */
#ifndef _SASC_HIDE_C99MATHLIB
#define DECIMAL_DIG 17       /* precision of decimal<->hex conversion */
#define FLT_EVAL_METHOD 0    /* expressions evaluated as requested type */
#endif
#define FLT_ROUNDS 0         /* float addition does not round */

#define FLT_MANT_DIG 6       /* hex digits in float mantissa */
#define DBL_MANT_DIG 14      /* hex digits in double mantissa */
#define LDBL_MANT_DIG 14     /* hex digits in long double mantissa */

#define FLT_DIG 6            /* float decimal precision */
#define DBL_DIG 15           /* double decimal precision */
#define LDBL_DIG 15          /* long double decimal precision */

#define FLT_MIN_EXP -64      /* minimum exponent of 16 for float */
#define DBL_MIN_EXP -64      /* minimum exponent of 16 for double */
#define LDBL_MIN_EXP -64     /* minimum exponent of 16 for long double */

#define FLT_MIN_10_EXP -78   /* minimum float power of 10 */
#define DBL_MIN_10_EXP -78   /* minimum double power of 10 */
#define LDBL_MIN_10_EXP -78  /* minimum long double power of 10 */

#define FLT_MAX_EXP 63       /* maximum exponent of 16 for float */
#define DBL_MAX_EXP 63       /* maximum exponent of 16 for double */
#define LDBL_MAX_EXP 63      /* maximum exponent of 16 for long double */

#define FLT_MAX_10_EXP 75    /* maximum float power of 10 */
#define DBL_MAX_10_EXP 75    /* maximum double power of 10 */
#define LDBL_MAX_10_EXP 75   /* maximum long double power of 10 */

#define FLT_MAX .7237005e76F             /* maximum float */
                                         /* == 0x.FFFFFFp252F */
#define DBL_MAX .72370055773322621e76    /* maximum double */
                                         /* == 0x.FFFFFFFFFFFFFFp252 */
#define LDBL_MAX .72370055773322621e76L  /* maximum long double */

#define FLT_EPSILON .9536743e-6F             /* smallest float x such
                                                that 1.0 + x != 1.0 */
                                             /* == 0x1.0p-20F */
#define DBL_EPSILON .22204460492503131e-15   /* smallest double x such
                                                that 1.0 + x != 1.0 */
                                             /* == 0x1.0p-52 */
#define LDBL_EPSILON .22204460492503131e-15L /* smallest long double x such
                                                that 1.0 + x != 1.0 */

#define FLT_MIN .5397606e-78F            /* minimum float */
                                         /* == 0x1.0p-260F */
#define DBL_MIN .53976053469340279e-78   /* minimum double */
                                         /* == 0x1.0p-260 */
#define LDBL_MIN .53976053469340279e-78L /* minimum long double */

#else

#ifndef FLT_ROUNDS
int __builtin_fltrnds(void);
#endif

#define FLT_RADIX 2          /* hardware float radix */
#ifndef _SASC_HIDE_C99MATHLIB
#define DECIMAL_DIG 17       /* precision of decimal<->bin conversion */
#define FLT_EVAL_METHOD 0    /* expressions evaluated as requested type */
#endif
#define FLT_ROUNDS __builtin_fltrnds()  /* actual runtime round mode */

#define FLT_MANT_DIG 24      /* binary digits in float mantissa */
#define DBL_MANT_DIG 53      /* binary digits in double mantissa */
#define LDBL_MANT_DIG 53     /* binary digits in long double mantissa */

#define FLT_DIG 6            /* float decimal precision */
#define DBL_DIG 15           /* double decimal precision */
#define LDBL_DIG 15          /* long double decimal precision */

#define FLT_MIN_EXP -125     /* minimum exponent of 2 for float */
#define DBL_MIN_EXP -1021    /* minimum exponent of 2 for double */
#define LDBL_MIN_EXP -1021   /* minimum exponent of 2 for long double */

#define FLT_MIN_10_EXP -37   /* minimum float power of 10 */
#define DBL_MIN_10_EXP -307  /* minimum double power of 10 */
#define LDBL_MIN_10_EXP -307 /* minimum long double power of 10 */

#define FLT_MAX_EXP 128      /* maximum exponent of 2 for float */
#define DBL_MAX_EXP 1024     /* maximum exponent of 2 for double */
#define LDBL_MAX_EXP 1024    /* maximum exponent of 2 for long double */

#define FLT_MAX_10_EXP 38    /* maximum float power of 10 */
#define DBL_MAX_10_EXP 308   /* maximum double power of 10 */
#define LDBL_MAX_10_EXP 308  /* maximum long double power of 10 */

#define FLT_MAX 3.402823466e38F          /* maximum float */
                                         /* == 0x1.FFFFFEp127F */
#define DBL_MAX 1.7976931348623157e308   /* maximum double */
                                         /* == 0x1.FFFFFFFFFFFFFp1023 */
#define LDBL_MAX 1.7976931348623157e308L /* maximum long double */

#define FLT_EPSILON 1.1920929e-7F    /* smallest float x such that
                                        1.0 + x != 1.0 */
                                     /* == 0x1.0p-23F  */
#define DBL_EPSILON 2.2204460492503131e-16  /* smallest double x such
                                               that 1.0 + x != 1.0 */
                                            /* == 0x1.0p-52  */
#define LDBL_EPSILON 2.2204460492503131e-16L /* smallest longdbl x such
                                                that 1.0 + x != 1.0 */

#define FLT_MIN 1.17549435e-38F           /* minimum normalized float */
                                          /* == 0x1.0p-126 */
#define DBL_MIN 2.2250738585072014e-308   /* minimum normalized double*/
                                          /* == 0x1.0p-1022 */
#define LDBL_MIN 2.2250738585072014e-308L /* minimum normalized ldbl  */

#endif
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