CPML

   The Compaq Portable Mathematics Library (CPML) is a set of
   mathematical routines that are accessed from high-level languages
   (such as Fortran and C) which support mathematical functions.
   Many CPML routines can also be called directly using standard
   call interfaces, but it is recommended that you invoke CPML
   routines only from a high-level language.

   CPML routines are documented with generic names, and with the
   symbol F_TYPE to indicate generic floating-point values (e.g. F_
   TYPE sqrt (F_TYPE x)).

   To determine the appropriate names and interfaces within a
   specific programming language (e.g. float sqrtf(float x) or
   REAL*4 SQRT), refer to that language's documentation.

   To enable the use of CPML routines which are not provided by your
   high-level language, the actual CPML entrynames for OpenVMS are
   provided.

   Note: CPML routines which return complex numbers ("F_COMPLEX")
   use a private interface. Therefore, they can only be called from
   high-level languages that support that interface.

   The Data Types S_FLOAT, T_FLOAT and X_FLOAT refer to IEEE format
   floating-point numbers of single-, double-, and quad-precision,
   respectively. F_FLOAT and G_FLOAT refer to VAX format single-
   precision, and G-floating double-precision floating point
   numbers, respectively.

   For each CPML routine, "exceptional" input values are
   also provided. That is, values for which the function is
   mathematically undefined, or for which the output would be out
   of range for the floating-point type.

   Refer to your language's documentation for information about
   how exceptions manifest themselves and how to control exception
   behavior.
 

Additional information available:

acos()          acosh()         asin()          asinh()         atan()
atan2()         atanh()         bessel()        cabs()          cbrt()
ccos()          cdiv()          ceil()          cexp()          clog()
cmul()          copysign()      cos()           cosh()          cot()
cpow()          csin()          csqrt()         drem()          erf()
exp()           fabs()          finite()        floor()         fmod()
fp_class()      frexp()         hypot()         ilogb()         isnan()
ldexp()         lgamma()        log()           logb()          modf()
nextafter()     nint()          pow()           random()        remainder()
rint()          scalb()         sin()           sinh()          sqrt()
tan()           tanh()          trunc()         unordered()