MTH$ - MATH Routines

Overview

VX/MTH$ provides a call-compatible implementation of OpenVMS mathematical functions for x86 and ARM Linux. It ensures precision and compatibility for OpenVMS applications performing mathematical computations, enabling seamless execution on Linux environments.

Key Features

• Fully compatible with OpenVMS MTH$ APIs.

• Supports a comprehensive set of mathematical functions, including trigonometry, logarithms, and floating-point conversions.

• Allows seamless migration of OpenVMS applications that rely on MTH$ routines.

• Integrates with VX/RT to provide full OpenVMS mathematical functionality on x86 and ARM Linux.

• Ensures numerical precision and maintains OpenVMS computation behavior without requiring major code modifications.

VX/MTH$ Callable Routines

MTH$ API	Function
MTH$ABS	Absolute value of a number
MTH$ACOS	Arc cosine function
MTH$ACOSD	Arc cosine in degrees
MTH$AIMAX0	Integer maximum of values
MTH$AIMIN0	Integer minimum of values
MTH$AINT	Truncate to integer
MTH$AJMAX0	Integer max (adjustable)
MTH$AJMIN0	Integer min (adjustable)
MTH$ALOG	Natural logarithm
MTH$ALOG10	Base-10 logarithm
MTH$ALOG2	Base-2 logarithm
MTH$AMAX1	Maximum of floating values
MTH$AMIN1	Minimum of floating values
MTH$AMOD	Modulus function
MTH$ANINT	Nearest integer function
MTH$ASIN	Arc sine function
MTH$ASIND	Arc sine in degrees
MTH$ATAN	Arc tangent function
MTH$ATAN2	Arc tangent of two args
MTH$ATAND	Arc tangent in degrees
MTH$ATAND2	Arc tangent (2 args
MTH$ATANH	Inverse hyperbolic tangent
MTH$COS	Cosine function
MTH$COSD	Cosine in degrees
MTH$COSH	Hyperbolic cosine
MTH$CVT_D_G	Convert double to G format
MTH$CVT_G_D	Convert G format to double
MTH$DABS	Double precision absolute
MTH$DACOS	Double arc cosine
MTH$DACOSD	Double arc cosine in degrees
MTH$DASIN	Double arc sine
MTH$DASIND	Double arc sine in degrees
MTH$DATAN	Double arc tangent
MTH$DATAN2	Double arc tangent (2 args)
MTH$DATAND	Double arc tangent in deg
MTH$DATAND2	Double atan2 in degrees
MTH$DATANH	Double inverse hyperbolic tan
MTH$DBLE	Convert integer to double
MTH$DCOS	Double cosine
MTH$DCOSD	Computes the cosine of an angle in degrees
MTH$DCOSH	Double hyperbolic cosine
MTH$DDIM	Double positive difference
MTH$DEXP	Double exponential function
MTH$DFLOOR	Floor function for double
MTH$DFLOTI	Convert integer to float
MTH$DFLOTJ	Convert integer to float
MTH$DIM	Positive difference function
MTH$DINT	Double integer truncation
MTH$DLOG	Double natural logarithm
MTH$DLOG10	Double base-10 logarithm
MTH$DLOG2	Double base-2 logarithm
MTH$DMAX1	Double maximum value
MTH$DMIN1	Double minimum value
MTH$DMOD	Double modulus function
MTH$DNINT	Nearest integer (double)
MTH$DPROD	Double precision product
MTH$DSIGN	Double sign function
MTH$DSIN	Double sine function
MTH$DSINCOS	Double sine and cosine
MTH$DSINCOSD	Double sin/cos in degrees
MTH$DSIND	Double sine in degrees
MTH$DSINH	Double hyperbolic sine
MTH$DSQRT	Double square root
MTH$DTAN	Double tangent function
MTH$DTAND	Double tangent in degrees
MTH$DTANH	Double hyperbolic tangent
MTH$EXP	Exponential function
MTH$FLOATI	Convert integer to float
MTH$FLOATJ	Convert integer to float
MTH$FLOOR	Floor function
MTH$GABS	General absolute value
MTH$GACOS	General arc cosine
MTH$GACOSD	General arc cosine in deg
MTH$GASIN	General arc sine
MTH$GASIND	General arc sine in deg
MTH$GATAN	General arc tangent
MTH$GATAN2	General arc tangent (2 args)
MTH$GATAND	General arc tangent in deg
MTH$GATAND2	General atan2 in degrees
MTH$GATANH	Computes the inverse hyperbolic tangent
MTH$GCOS	General cosine function
MTH$GCOSD	General cosine in degrees
MTH$GCOSH	General hyperbolic cosine
MTH$GDBLE	General double precision
MTH$GDIM	General positive difference
MTH$GEXP	General exponential function
MTH$GFLOOR	General floor function
MTH$GFLOTI	General integer to float
MTH$GFLOTJ	General integer to float
MTH$GINT	General integer truncation
MTH$GLOG	General natural logarithm
MTH$GLOG10	General base-10 logarithm
MTH$GLOG2	General base-2 logarithm
MTH$GMAX1	General maximum value
MTH$GMIN1	General minimum value
MTH$GMOD	General modulus function
MTH$GNINT	General nearest integer
MTH$GPROD	General precision product
MTH$GSIGN	General sign function
MTH$GSIN	General sine function
MTH$GSINCOS	General sine and cosine
MTH$GSINCOSD	General sin/cos in degrees
MTH$GSIND	General sine in degrees
MTH$GSINH	General hyperbolic sine
MTH$GSQRT	General square root
MTH$GTAN	General tangent function
MTH$GTAND	General tangent in degrees
MTH$GTANH	General hyperbolic tangent
MTH$HABS	Hyperbolic absolute value
MTH$HACOS	Hyperbolic arc cosine
MTH$HACOSD	Hyperbolic arc cosine in degrees
MTH$HASIN	Hyperbolic arc sine
MTH$HASIND	Hyperbolic arc sine in degrees
MTH$HATAN	Hyperbolic arc tangent
MTH$HATAN2	Hyperbolic arc tangent (2 args)
MTH$HATAND	Hyperbolic arc tangent in degrees
MTH$HATAND2	Hyperbolic atan2 in degrees
MTH$HATANH	Inverse hyperbolic tangent
MTH$HCOS	Hyperbolic cosine function
MTH$HCOSD	Computes the hyperbolic cosine in degrees
MTH$HCOSH	Hyperbolic cosine
MTH$HDBLE	Hyperbolic double precision
MTH$HDIM	Hyperbolic positive difference
MTH$HEXP	Hyperbolic exponential function
MTH$HFLOOR	Hyperbolic floor function
MTH$HFLOTI	Hyperbolic integer to float
MTH$HFLOTJ	Hyperbolic integer to float
MTH$HINT	Hyperbolic integer truncation
MTH$HLOG	Hyperbolic natural logarithm
MTH$HLOG10	Hyperbolic base-10 logarithm
MTH$HLOG2	Hyperbolic base-2 logarithm
MTH$HMAX1	Hyperbolic maximum value
MTH$HMIN1	Hyperbolic minimum value
MTH$HMOD	Hyperbolic modulus function
MTH$HNINT	Hyperbolic nearest integer
MTH$HPROD	Hyperbolic precision product
MTH$HSIGN	Hyperbolic sign function
MTH$HSIN	Hyperbolic sine function
MTH$HSINCOS	Hyperbolic sine and cosine
MTH$HSINCOSD	Hyperbolic sin/cos in degrees
MTH$HSIND	Hyperbolic sine in degrees
MTH$HSINH	Hyperbolic sine
MTH$HSQRT	Hyperbolic square root
MTH$HTAN	Hyperbolic tangent function
MTH$HTAND	Hyperbolic tangent in degrees
MTH$HTANH	Hyperbolic tangent
MTH$IIABS	Integer absolute value
MTH$IIAND	Integer bitwise AND
MTH$IIDIM	Integer positive difference
MTH$IIDINT	Integer double precision
MTH$IIDNNT	Integer nearest value
MTH$IIEOR	Integer bitwise XOR
MTH$IIFIX	Integer fixed point conversion
MTH$IIGINT	Integer general integer
MTH$IIGNNT	Integer general nearest integer
MTH$IIHINT	Integer hyperbolic integer
MTH$IIHNNT	Integer hyperbolic nearest int
MTH$IINT	Integer conversion function
MTH$IIOR	Performs a bitwise OR operation
MTH$IISHFT	Integer bit shift function
MTH$IISIGN	Integer sign function
MTH$IMAX0	Integer maximum (0-based)
MTH$IMAX1	Integer maximum (1-based)
MTH$IMIN0	Integer minimum (0-based)
MTH$IMIN1	Integer minimum (1-based)
MTH$IMOD	Integer modulus function
MTH$ININT	Integer nearest integer
MTH$INOT	Integer bitwise NOT
MTH$JIABS	General integer absolute
MTH$JIAND	General integer bitwise AND
MTH$JIDIM	General integer positive diff
MTH$JIDINT	General integer double prec
MTH$JIDNNT	General integer nearest int
MTH$JIEOR	General integer bitwise XOR
MTH$JIFIX	General integer fixed point
MTH$JIGINT	General integer general int
MTH$JIGNNT	General integer nearest int
MTH$JIHINT	General integer hyperbolic int
MTH$JIHNNT	General int hyperbolic nearest
MTH$JINT	General integer conversion
MTH$JIOR	General integer bitwise OR
MTH$JISHFT	General integer bit shift
MTH$JISIGN	General integer sign function
MTH$JMAX0	General integer max (0-based)
MTH$JMAX1	General integer max (1-based)
MTH$JMIN0	General integer min (0-based)
MTH$JMIN1	General integer min (1-based)
MTH$JMOD	General integer modulus
MTH$JNINT	General integer nearest int
MTH$JNOT	General integer bitwise NOT
MTH$RANDOM	Generate a random number
MTH$SGN	Sign function
MTH$SGNEXT	Extended sign function
MTH$SIGN	Return sign of a number
MTH$SIN	Sine function
MTH$SINCOS	Sine and cosine functions
MTH$SINCOSD	Sine and cosine in degrees
MTH$SIND	Sine function in degrees
MTH$SINH	Computes the hyperbolic sine function
MTH$SNGL	Converts a double-precision floating point to single
MTH$SNGLG	Converts a generalized floating point to single
MTH$SQRT	Computes the square root of a number
MTH$TAN	Computes the tangent of an angle
MTH$TAND	Computes the tangent of an angle in degrees
MTH$TANH	Computes the hyperbolic tangent
MTH$UMAX	Returns the maximum of two unsigned numbers
MTH$UMIN	Returns the minimum of two unsigned numbers

Why Use VX/MTH$?

• Preserves OpenVMS mathematical computation logic, enabling direct porting of applications.

• Provides full compatibility with OpenVMS MTH$ functions, ensuring numerical precision on Linux.

• Supports essential OpenVMS mathematical operations, including trigonometric, logarithmic, and floating-point functions.

• Seamlessly integrates into the VX/RT ecosystem for OpenVMS compatibility on x86 and ARM Linux.

VX/MTH$ ensures that OpenVMS applications requiring MTH$ services can be migrated without major modifications, preserving productivity and minimizing development costs.

MTH$ - MATH Routines

Overview

Key Features

VX/MTH$ Callable Routines

Why Use VX/MTH$?

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