Class R1 ... Machine-dependent constants

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Modules for class R1

• D1MACH (R1MACH) Returns double precision machine-dependent constants (like largest allowed float ...
• I1MACH Provides integer machine dependent information, e.g., largest integer. See P.A. ...
• MACHAR Fortran subroutine for dynamically determining 13 fundamental parameters associa ...
• MACHARC C procedure for dynamically determining 13 fundamental parameters associated wit ...
• R1MACH (D1MACH) Returns single precision machine-dependent constants (like largest allowed float ...

• SERV A set of service functions for numerical programming in C, including functions f ...

• D1MACH (R1MACH) Provides machine dependent information, e.g. D1MACH(4) returns double precision ...
• I1MACH Provides integer machine dependent information, e.g., largest integer.
• R1MACH (D1MACH) Returns single precision machine-dependent constants (like largest allowed float ...

• AMACH (DMACH) Retrieve single-precision machine constants.
• DMACH (AMACH) Retrieve single-precision machine constants.
• IMACH Retrieve integer machine constants.
• UMACH Set or retrieve input or output device unit numbers.

• AMACH (DMACH) Retrieve single-precision machine constants.
• DMACH (AMACH) Retrieve single-precision machine constants.
• IMACH Retrieve integer machine constants.
• UMACH Set or retrieve input or output device unit numbers.

• DLAMCH (SLAMCH) Determines machine parameters such as relative machine precision, base, type of ...
• SLAMCH (DLAMCH) Determines machine parameters such as relative machine precision, base, type of ...

• X01AAF Returns the value of the constant pi.
• X01ABF Returns the value of Euler's constant, lambda.
• X02AHF Returns the largest positive REAL argument for which the SIN and COS routines re ...
• X02AJF Returns the machine precision, i.e., (1/2)*B**(1-P) if ROUNDS is true or B**(1-P ...
• X02AKF Returns the smallest positive model number, i.e., B**(EMIN-1).
• X02ALF Returns the largest positive model number, i.e., (1-B**(-P))*B**EMAX. (See the C ...
• X02AMF Returns the safe range parameter as defined in the Chapter Introduction in the N ...
• X02BBF Returns the largest positive integer value.
• X02BEF Maximum number of decimal digits that can be represented.
• X02BHF Returns the model parameter B (see the Chapter Introduction in the NAG Fortran L ...
• X02BJF Returns the model parameter P (see the Chapter Introduction in the NAG Fortran L ...
• X02BKF Returns the model parameter EMIN (see the Chapter Introduction in the NAG Fortra ...
• X02BLF Returns the model parameter EMAX (see the Chapter Introduction in the NAG Fortra ...
• X02DAF Switch for taking precautions to avoid underflow.
• X02DJF Returns the model parameter ROUNDS (see the Chapter Introduction in the NAG Fort ...

• NAG_DECIMAL_DIGITS Constant indicating the maximum number of decimal digits which can be accurately ...
• NAG_EULER_CONSTANT Constant indicating the value of Euler's constant, gamma. .
• NAG_MACHINE_PRECISION Returns the machine precision, i.e., (1/2)*B**(1-P) if ROUNDS is true or B**(1-P ...
• NAG_MAX_INTEGER Constant indicating the largest positive integer value.
• NAG_MAX_SINE_ARGUMENT Returns the largest positive real argument for which the SIN and COS routines re ...
• NAG_PI Constant indicating the value of pi. .
• NAG_REAL_ARITHMETIC_ROUNDS Constant indicating the model parameter rounds.
• NAG_REAL_BASE Constant indicating the model parameter b.
• NAG_REAL_BASE_DIGITS Constant indicating the model parameter p.
• NAG_REAL_LARGEST_NUMBER Returns the largest positive model number, i.e., (1-B**(-P))*B**EMAX.
• NAG_REAL_MAX_EXPONENT Constant indicating the model parameter emax.
• NAG_REAL_MIN_EXPONENT Constant indicating the model parameter emin.
• NAG_REAL_SAFE_SMALL_NUMBER Returns the safe range parameter.
• NAG_REAL_SMALLEST_NUMBER Returns the smallest positive model number, i.e., B**(EMIN-1).
• NAG_UNDERFLOW_FLAG The value FALSE if the system sets underflowing quantities to zero, without any ...

• DPARA (SPARA) A Fortran version of the original Basic program PARANOIA.B, which determines cha ...
• PARANOIA.B A Basic program for determining characteristics of a computer's floating point a ...
• PARANOIA.C A C version of the original Basic program PARANOIA.B, which determines character ...
• PARANOIA.M2 A Modula-2 version of the original Basic program PARANOIA.B, which determines ch ...
• PARANOIA.P A Pascal version of the original Basic program PARANOIA.B, which determines char ...
• SPARA (DPARA) A Fortran version of the original Basic program PARANOIA.B, which determines cha ...

• D1MACH (R1MACH) Provides machine dependent double precision constants for the PORT library progr ...
• FRMATD (FRMATR) Returns appropriate machine-dependent FORMAT specifications for printing real qu ...
• FRMATI Returns appropriate machine-dependent FORMAT specifications for printing integer ...
• FRMATR (FRMATD) Returns appropriate machine-dependent FORMAT specifications for printing real qu ...
• I1MACH Provides integer machine dependent information, e.g., largest integer.
• R1MACH (D1MACH) Provides the single precision machine-dependent constants required to adapt PORT ...

• D1MACH (R1MACH) Return floating point machine dependent constants.
• I1MACH Return integer machine dependent constants.
• R1MACH (D1MACH) Return floating point machine dependent constants.

• 528 Three program packages which provide a framework for a portable Fortran subrouti ...
• 665 MACHAR: A Fortran subroutine to dynamically determine machine parameters. (See W ...