XSLPgetformula, XPRSnlpgetformula
Purpose
Retrieve a single matrix formula as a formula split into tokens.
Synopsis
int XPRS_CC XSLPgetformula(XSLPprob prob, int row, int parsed, int maxtypes, int *p_ntypes, int[] type, double[] value);
Arguments
|
prob
|
The current SLP problem.
|
|
row
|
Integer holding the row index for the formula.
|
|
parsed
|
Integer indicating whether the formula of the row is to be returned in internal unparsed format (
parsed=0) or parsed (reverse Polish) format (
parsed=1).
|
|
maxtypes
|
Maximum number of tokens to return, i.e., the length of the type and value arrays.
|
|
p_ntypes
|
Will be set to the length of the formula, including the
XSLP_EOF token.
|
|
type
|
Integer array to hold the token types for the formula. May be NULL if
maxtypes is zero.
|
|
value
|
Double array of values corresponding to
type. May be
NULL if
maxtypes is zero.
|
Example
The following example displays the nonlinear formula in row 2, column 3 in unparsed form:
int ntypes, n;
int *type;
double *value;
XSLPgetformula(prob, 2, 0, 0, &ntypes, NULL, NULL);
type = malloc(ntypes * sizeof(int));
value = malloc(ntypes * sizeof(double));
XSLPgetformula(prob, 2, 0, 10, &ntypes, type, value);
for (n = 0; type[n] != XSLP_EOF; n++)
printf("\nType=%-3d value=%lg", type[n], value[n]);
Further information
1. The
type and
value arrays are terminated by an
XSLP_EOF token.
2. If
type and
value are both null, the number of tokens available will be returned in
p_ntypes.
3. If
type or
value are non-null and the number of tokens available exceeds
maxtypes, an error code will be returned: this behaviour may change in a future release. To determine the number of available tokens, pass null for these arrays.
Related topics
XPRSnlpgetformulastr,
XSLPaddformulas,
XPRSnlpchgformulastr,
XSLPchgformula,
XSLPloadformulas,
XSLPgetformularows,
XSLPgetformula,
XSLPdelformulas
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