APREPRO Functions

Syntax

Description

abs(x)

Calculates the absolute value of x. |x|

acos(x)

Calculates the inverse cosine of x, returns radians

acosd(x)

Calculates the inverse cosine of x, returns degrees

acosh(x)

Calculates the inverse hyperbolic cosine of x

asin(x)

Calculates the inverse sine of x, returns radians

asind(x)

Calculates the inverse sine of x, returns degrees

asinh(x)

Calculates the inverse hyperbolic sine of x

atan(x)

Calculates the inverse tangent of x, returns radians

atan2(y,x)

Calculates the inverse tangent of y/x, returns radians

atan2d(y,x)

Calculates the inverse tangent of y/x, returns degrees

atand(x)

Calculates the inverse tangent of x, returns degrees

atanh(x)

Calculates the inverse hyperbolic tangent of x

ceil(x)

Calculates the smallest integer not less than x

cos(x)

Calculates the cosine of x, with x in radians

cosd(x)

Calculates the cosine of x, with x in degrees

cosh(x)

Calculates the hyperbolic cosine of x

d2r(x)

Converts degrees to radians.

dim(x,y)

Calculates x - min(x,y).

dist(x₁,y₁, x₂,y₂)

Calculates distance from x₁,y₁ to x₂,y₂

exp(x)

Calculates e^x (Exponential)

floor(x)

Calculates the largest integer not greater than x.

fmod(x,y)

Calculates the floating-point remainder of x/y.

hypot(x,y)

Calculates sqrt(x²+y²)

int(x), [x]

Calculates the integer part of x truncated toward 0.

julday(mm, dd, yy)

Calculates the Julian day corresponding to mm/dd/yy.

juldayhms (mm, dd, yy, hh, mm, ss)

Calculates the Julian day corresponding to mm/dd/yy at hh:mm:ss

lgamma(x)

Calculates log(G(x))

ln(x), log(x)

Calculates the natural (base e) logarithm of x.

log1p(x)

Calculates log(1+x)

log10(x)

Calculates the base 10 logarithm of x.

max(x,y)

Calculates the maximum of x and y.

min(x,y)

Calculates the minimum of x and y.

polarX(r,a)

Calculates r ´ cos(a), a is in degrees

polarY(r,a)

Calculates r ´ sin(a), a is in degrees

r2d(x)

Converts radians to degrees.

rand(xl,xh)

Calculates a random number between xl and xh.

sign(x,y)

Calculates x ´ sgn(y)

sin(x)

Calculates the sine of x, with x in radians.

sind(x)

Calculates the sine of x, with x in degrees.

sinh(x)

Calculates the hyperbolic sine of x

sqrt(x)

Calculates the square root of x.

tan(x)

Calculates the tangent of x, with x in radians.

tand(x)

Calculates the tangent of x, with x in degrees.

tanh(x)

Calculates the hyperbolic tangent of x.

Vangle(x1,y1, x2,y2)

Calculates the angle between the vector x₁i + y₁j and x₂i + y₂j. Returns radians.

Vangled(x1,y1, x2,y2)

Calculates the angle between the vector x₁i + y₁j and x₂i + y₂j. Returns degrees.

Returns the name for the specified attribute index in the block within the given id

Returns the value for the specified attribute index in the block within the given id

Checks if the feature "feature_name" is available and returns nonzero if the feature is enabled

Acceptable metrics include:
shape
aspect ration bet
aspect ratio gam
aspect ratio
condition no
diagonal ratio
dimension
distortion
element volume
jacobian
relative size
scaled jacobian
shape and size
shear and size
shear
skew
stretch
taper

Acceptable metrics include:
shape
aspect ratio
condition no
distortion
element area
jacobian
maximum angle
minimum angle
relative size
scaled jacobian
shape and size
shear and size
shear
skew
stretch
taper
warpage

Acceptable metrics include:
shape
aspect ratio
condition no
distortion
element area
jacobian
maximum angle
minimum angle
relative size
scaled jacobian
shape and size
shear and size
shear
skew
stretch
taper
warpage

Syntax

Description

tolower(svar)

Translates all uppercase characters in svar to lowercase. It modifies svar and returns the resulting string.

toupper(svar)

Translates all lowercase character in svar to uppercase. It modifies svar and returns the resulting string.

execute(svar)

svar is parsed and executed as if it were a line read from the input file. For example,

if svar="b=sqrt(25.0)", then
#{execute(svar)}

returns the value 5 and sets b = 5. The expression svar is enclosed in delimiters prior to being executed, and it must be a valid expression or an error message will be printed.

rescan(svar)

Similar to execute(svar), except that svar is not enclosed in delimiters prior to being executed. For example,

if svar = "Create Vertex {1+5} {sqrt(5)} {sqrt(6)}", then
#{rescan(svar)}

would print:

Create Vertex 6 2.236067977 2.449489743.

The difference between execute(sv1) and rescan(sv2) is that sv1 must be a valid expression, but sv2 can contain zero or more expressions.

getenv(svar)

Returns a string containing the value of the environment variable svar. If the environment variable is not defined, an empty string is returned.

get_word(n,svar,del)

Returns a string containing the nth word of svar. The words are separated by one or more of the characters in the string variable del

word_count(svar,del)

Returns the number of words in svar. Words are separated by one or more of the characters in the string variable del

strtod(svar)

Returns a double-precision floating-point number equal to the value represented by the character string pointed to by svar.