OCI NUMBER Functions

This section describes the OCI NUMBER functions.

Table 18-12 NUMBER Functions

Function/Page	Purpose
`OCINumberAbs()`	Computes the absolute value
`OCINumberAdd()`	Adds `NUMBERs`
`OCINumberArcCos()`	Computes the arc cosine
`OCINumberArcSin()`	Computes the arc sine
`OCINumberArcTan()`	Computes the arc tangent
`OCINumberArcTan2()`	Computes the arc tangent of two `NUMBER`s
`OCINumberAssign()`	Assigns one `NUMBER` to another
`OCINumberCeil()`	Computes the ceiling of `NUMBER`
`OCINumberCmp()`	Compares `NUMBER`s
`OCINumberCos()`	Computes the cosine
`OCINumberDec()`	Decrements a `NUMBER`
`OCINumberDiv()`	Divides two `NUMBER`s
`OCINumberExp()`	Raises e to the specified Oracle `NUMBER` power
`OCINumberFloor()`	Computes the floor of a `NUMBER`
`OCINumberFromInt()`	Converts an integer to an Oracle `NUMBER`
`OCINumberFromReal()`	Convert a real to an Oracle `NUMBER`
`OCINumberFromText()`	Convert a string to an Oracle `NUMBER`
`OCINumberHypCos()`	Computes the hyperbolic cosine
`OCINumberHypSin()`	Computes the hyperbolic sine
`OCINumberHypTan()`	Computes the hyperbolic tangent
`OCINumberInc()`	Increments an Oracle `NUMBER`
`OCINumberIntPower()`	Raises a given base to an integer power
`OCINumberIsInt()`	Tests if a `NUMBER` is an integer
`OCINumberIsZero()`	Tests if a `NUMBER` is zero
`OCINumberLn()`	Computes the natural logarithm
`OCINumberLog()`	Computes the logarithm to an arbitrary base
`OCINumberMod()`	Modulo division
`OCINumberMul()`	Multiplies `NUMBER`s
`OCINumberNeg()`	Negates a `NUMBER`
`OCINumberPower()`	Exponentiation to base e
`OCINumberPrec()`	Rounds a `NUMBER` to a specified number of decimal places
`OCINumberRound()`	Rounds an Oracle `NUMBER` to a specified decimal place
`OCINumberSetPi()`	Initializes a `NUMBER` to Pi
`OCINumberSetZero()`	Initializes a `NUMBER` to zero
`OCINumberShift()`	Multiplies by 10, shifting specified number of decimal places
`OCINumberSign()`	Obtains the sign of an Oracle `NUMBER`
`OCINumberSin()`	Computes the sine
`OCINumberSqrt()`	Computes the square root of a `NUMBER`
`OCINumberSub()`	Subtracts `NUMBER`s
`OCINumberTan()`	Computes the tangent
`OCINumberToInt()`	Converts an Oracle `NUMBER` to an integer
`OCINumberToReal()`	Converts an Oracle `NUMBER` to a real
`OCINumberToRealArray()`	Converts an array of `NUMBER` to a real array.
`OCINumberToText()`	Converts an Oracle `NUMBER` to a string
`OCINumberTrunc()`	Truncates an Oracle `NUMBER` at a specified decimal place

OCINumberAbs()

Purpose

Computes the absolute value of an Oracle number.

Syntax

sword OCINumberAbs ( OCIError              *err,
                     CONST OCINumber       *number, 
                     OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Input number.

result (OUT)

The absolute value of the input number.

Comments

This function returns an error if any of the number arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberSign()

OCINumberAdd()

Purpose

Adds two Oracle numbers together.

Syntax

sword OCINumberAdd ( OCIError              *err,
                     CONST OCINumber       *number1, 
                     CONST OCINumber       *number2,
                     OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number1, number2 (IN)

Numbers to be added.

result (OUT)

Result of adding number1 to number2.

Comments

This function returns an error if any of the number arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberSub()

OCINumberArcCos()

Purpose

Takes the arc cosine in radians of an Oracle number.

Syntax

sword OCINumberArcCos ( OCIError            *err, 
                        CONST OCINumber     *number, 
                        OCINumber           *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Argument of the arc cosine.

result (OUT)

Result of the arc cosine in radians.

Comments

This function returns an error if any of the number arguments is NULL, or if number is less than -1 or if number is greater than 1.

Related Functions

OCIErrorGet(), OCINumberCos()

OCINumberArcSin()

Purpose

Takes the arc sine in radians of an Oracle number.

Syntax

sword OCINumberArcSin ( OCIError              *err,
                        CONST OCINumber       *number, 
                        OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Argument of the arc sine.

result (OUT)

Result of the arc sine in radians.

Comments

This function returns an error if any of the number arguments is NULL, or if number is less than -1 or if number is greater than 1.

Related Functions

OCIErrorGet(), OCINumberSin()

OCINumberArcTan()

Purpose

Takes the arc tangent in radians of an Oracle number.

Syntax

sword OCINumberArcTan ( OCIError             *err, 
                        CONST OCINumber      *number, 
                        OCINumber            *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Argument of the arc tangent.

result (OUT)

Result of the arc tangent in radians.

Comments

This function returns an error if any of the number arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberTan()

OCINumberArcTan2()

Purpose

Takes the arc tangent of two Oracle numbers.

Syntax

sword OCINumberArcTan2 ( OCIError              *err, 
                         CONST OCINumber       *number1, 
                         CONST OCINumber       *number2,
                         OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number1 (IN)

Argument 1 of the arc tangent.

number2 (IN)

Argument 2 of the arc tangent.

result (OUT)

Result of the arc tangent in radians.

Comments

This function returns an error if any of the number arguments is NULL, or if number2 is equal to 0.

Related Functions

OCIErrorGet(), OCINumberTan()

OCINumberAssign()

Purpose

Assigns one Oracle number to another Oracle number.

Syntax

sword OCINumberAssign ( OCIError              *err,
                        CONST OCINumber       *from, 
                        OCINumber             *to );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

from (IN)

NUMBER to be assigned.

to (OUT)

NUMBER copied into.

Comments

Assigns the number identified by from to the number identified by to.

This function returns an error if any of the number arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberCmp()

OCINumberCeil()

Purpose

Computes the ceiling value of an Oracle number.

Syntax

sword OCINumberCeil ( OCIError              *err, 
                      CONST OCINumber       *number, 
                      OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Input number.

result (OUT)

Output which will contain the ceiling value of the input number.

Comments

This function returns an error if any of the number arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberFloor()

OCINumberCmp()

Purpose

Compares two Oracle numbers.

Syntax

sword OCINumberCmp ( OCIError            *err,
                     CONST OCINumber     *number1, 
                     CONST OCINumber     *number2,
                     sword               *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number1, number2 (IN)

NUMBERs to compare.

result (OUT)

Comparison result:

Table 18-13 Comparison Results

Comparison result	*Output in result* parameter**
number1 < number2	negative
number1 = number2	0
number1 > number2	positive

Comments

This function returns an error if any of the number arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberAssign()

OCINumberCos()

Purpose

Computes the cosine in radians of an Oracle number.

Syntax

sword OCINumberCos ( OCIError              *err,
                     CONST OCINumber       *number, 
                     OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Argument of the cosine in radians.

result (OUT)

Result of the cosine.

Comments

This function returns an error if any of the number arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberArcCos()

OCINumberDec()

Purpose

Decrements an OCINumber.

Syntax

sword OCINumberDec ( OCIError *err, 
               OCINumber *number );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN/OUT)

A positive Oracle NUMBER to be decremented.

Comments

Decrements an Oracle number in place. It is assumed that the input is an integer between 0 and 100^21-2. If the is input too large, it will be treated as 0 - the result will be an Oracle number 1. If the input is not a positive integer, the result will be unpredictable.

This function returns an error if the input number is NULL.

Related Functions

OCINumberInc()

OCINumberDiv()

Purpose

Divides two Oracle NUMBERs.

Syntax

sword OCINumberDiv ( OCIError               *err,
                     CONST OCINumber        *number1, 
                     CONST OCINumber        *number2,
                     OCINumber              *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number1 (IN)

Pointer to the numerator.

number2 (IN)

Pointer to the denominator.

result (OUT)

Division result.

Comments

Divides number1 by number2 and returns result in result.

This function returns an error if:

any of the number arguments is NULL
there is an underflow error
there is a divide-by-zero error

Related Functions

OCIErrorGet(), OCINumberMul()

OCINumberExp()

Purpose

Raises e to the specified Oracle number power.

Syntax

sword OCINumberExp ( OCIError              *err, 
                     CONST OCINumber       *number,
                     OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

This function raises e to this Oracle number power.

result (OUT)

Output of exponentiation.

Comments

This function returns an error if any of the number arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberLn()

OCINumberFloor()

Purpose

Computes the floor value of an Oracle NUMBER.

Syntax

sword OCINumberFloor ( OCIError              *err,
                       CONST OCINumber       *number, 
                       OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Input NUMBER.

result (OUT)

The floor value of the input NUMBER.

Comments

This function returns an error if any of the number arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberCeil()

OCINumberFromInt()

Purpose

Converts an integer to an Oracle number.

Syntax

sword OCINumberFromInt ( OCIError            *err,
                         CONST dvoid         *inum, 
                         uword               inum_length,
                         uword               inum_s_flag,
                         OCINumber           *number );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

inum (IN)

Pointer to the integer to convert.

inum_length (IN)

Size of the integer.

inum_s_flag (IN)

Flag that designates the sign of the integer, as follows:

OCI_NUMBER_UNSIGNED - Unsigned values
OCI_NUMBER_SIGNED - Signed values

number (OUT)

Given integer converted to Oracle number.

Comments

This is a native type conversion function. It converts any Oracle standard machine-native integer type, such as ub4 or sb2, to an Oracle number.

This function returns an error if the number is too big to fit into an Oracle number, if number or inum is NULL, or if an invalid sign flag value is passed in inum_s_flag.

Related Functions

OCIErrorGet(), OCINumberToInt()

OCINumberFromReal()

Purpose

Converts a real (floating-point) type to an Oracle NUMBER.

Syntax

sword OCINumberFromReal ( OCIError           *err,
                          CONST dvoid        *rnum,
                          uword              rnum_length,
                          OCINumber          *number );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

rnum (IN)

Pointer to the floating point number to convert.

rnum_length (IN)

The size of the desired result, which equals sizeof({float | double | long double}).

number (OUT)

Given float converted to Oracle NUMBER.

Comments

This is a native type conversion function. It converts a machine-native floating point type to an Oracle NUMBER.

This function returns an error if number or rnum is NULL, or if rnum_length equals zero.

Related Functions

OCIErrorGet(), OCINumberToReal()

OCINumberFromText()

Purpose

Converts character string to Oracle NUMBER.

Syntax

sword OCINumberFromText ( OCIError           *err, 
                          CONST OraText      *str, 
                          ub4                str_length,
                          CONST OraText      *fmt,
                          ub4                fmt_length, 
                          CONST OraText      *nls_params, 
                          ub4                nls_p_length, 
                          OCINumber          *number );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

str (IN)

Input string to convert to Oracle NUMBER.

str_length (IN)

Size of the input string.

fmt (IN)

Conversion format.

fmt_length (IN)

Length of the fmt parameter.

nls_params (IN)

Global Support format specification. If it is the NULL string (""), then the default parameters for the session is used.

nls_p_length (IN)

Length of the nls_params parameter.

number (OUT)

Given string converted to NUMBER.

Comments

Converts the given string to a NUMBER according to the specified format. Refer to the TO_NUMBER conversion function described in the Oracle Database SQL Reference for a description of format and multilingual parameters.

This function returns an error if there is an invalid format, an invalid multibyte format, or an invalid input string, if number or str is NULL, or if str_length is zero.

Related Functions

OCIErrorGet(), OCINumberToText()

OCINumberHypCos()

Purpose

Computes the hyperbolic cosine of an Oracle NUMBER.

Syntax

sword OCINumberHypCos ( OCIError              *err, 
                        CONST OCINumber       *number, 
                        OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Argument of the cosine hyperbolic.

result (OUT)

Result of the cosine hyperbolic.

Comments

This function returns an error if either of the NUMBER arguments is NULL.

Caution:

An Oracle NUMBER overflow causes an unpredictable result value.

Related Functions

OCIErrorGet(), OCINumberHypSin(), OCINumberHypTan()

OCINumberHypSin()

Purpose

Computes the hyperbolic sine of an Oracle NUMBER.

Syntax

sword OCINumberHypSin ( OCIError              *err,
                        CONST OCINumber       *number, 
                        OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Argument of the sine hyperbolic.

result (OUT)

Result of the sine hyperbolic.

Comments

This function returns an error if either of the NUMBER arguments is NULL.

Caution:

An Oracle number overflow causes an unpredictable result value.

Related Functions

OCIErrorGet(), OCINumberHypCos(), OCINumberHypTan()

OCINumberHypTan()

Purpose

Computes the hyperbolic tangent of an Oracle NUMBER.

Syntax

sword OCINumberHypTan ( OCIError              *err,
                        CONST OCINumber       *number,
                        OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Argument of the tangent hyperbolic.

result (OUT)

Result of the tangent hyperbolic.

Comments

This function returns an error if either of the NUMBER arguments is NULL.

Caution:

An Oracle NUMBER overflow causes an unpredictable result value.

Related Functions

OCIErrorGet(), OCINumberHypCos(), OCINumberHypSin()

OCINumberInc()

Purpose

Increments an OCINumber.

Syntax

sword OCINumberInc ( OCIError   *err, 
                     OCINumber  *number );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN/OUT)

A positive Oracle NUMBER to be incremented.

Comments

Increments an Oracle NUMBER in place. It is assumed that the input is an integer between 0 and 100^21-2. If the is input too large, it will be treated as 0 - the result will be an Oracle NUMBER 1. If the input is not a positive integer, the result will be unpredictable.

This function returns an error if the input NUMBER is NULL.

Related Functions

OCINumberDec()

OCINumberIntPower()

Purpose

Raises a given base to a given integer power.

Syntax

sword OCINumberIntPower ( OCIError             *err, 
                          CONST OCINumber      *base, 
                          CONST sword          exp,
                          OCINumber            *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

base (IN)

Base of the exponentiation.

exp (IN)

Exponent to which the base is raised.

result (OUT)

Output of exponentiation.

Comments

This function returns an error if either of the NUMBER arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberPower()

OCINumberIsInt()

Purpose

Tests if an OCINumber is an integer.

Syntax

sword OCINumberIsInt ( OCIError         *err, 
                       CONST OCINumber  *number,
                       boolean          *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

NUMBER to be tested

result (OUT)

Set to TRUE if integer value else FALSE

Comments

This function returns an error if number or result is NULL.

Related Functions

OCIErrorGet(), OCINumberRound(), OCINumberTrunc()

OCINumberIsZero()

Purpose

Tests if the given NUMBER is equal to zero.

Syntax

sword OCINumberIsZero ( OCIError            *err,
                        CONST OCINumber     *number,
                        boolean             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

NUMBER to compare.

result (OUT)

Set to TRUE if equal to zero; otherwise, set to FALSE.

Comments

This function returns an error if the NUMBER argument is NULL.

Related Functions

OCIErrorGet(), OCINumberSetZero()

OCINumberLn()

Purpose

Takes the natural logarithm (base e) of an Oracle NUMBER.

Syntax

sword OCINumberLn ( OCIError              *err,
                    CONST OCINumber       *number,
                    OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Logarithm of this NUMBER is computed.

result (OUT)

Logarithm result.

Comments

This function returns an error if either of the NUMBER arguments is NULL, or if number is less than or equal to zero.

Related Functions

OCIErrorGet(), OCINumberExp(), OCINumberLog()

OCINumberLog()

Purpose

Takes the logarithm, to any base, of an Oracle NUMBER.

Syntax

sword OCINumberLog ( OCIError              *err, 
                     CONST OCINumber       *base, 
                     CONST OCINumber       *number, 
                     OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

base (IN)

Base of the logarithm.

number (IN)

Operand.

result (OUT)

Logarithm result.

Comments

This function returns an error if:

any of the NUMBER arguments is NULL
number <= 0
base <= 0

Related Functions

OCIErrorGet(), OCINumberLn()

OCINumberMod()

Purpose

Gets the modulus (remainder) of the division of two Oracle NUMBERs.

Syntax

sword OCINumberMod ( OCIError              *err,
                     CONST OCINumber       *number1, 
                     CONST OCINumber       *number2,
                     OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number1 (IN)

Pointer to the numerator.

number2 (IN)

Pointer to the denominator.

result (OUT)

Remainder of the result.

Comments

This function returns an error if number1 or number2 is NULL, or if there is a divide-by-zero error.

Related Functions

OCIErrorGet(), OCINumberDiv()

OCINumberMul()

Purpose

Multiplies two Oracle NUMBERs.

Syntax

sword OCINumberMul ( OCIError              *err,
                     CONST OCINumber       *number1, 
                     CONST OCINumber       *number2,
                     OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number1 (IN)

NUMBER to multiply.

number2 (IN)

NUMBER to multiply.

result (OUT)

Multiplication result.

Comments

Multiplies number1 with number2 and returns result in result.

This function returns an error if any of the NUMBER arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberDiv()

OCINumberNeg()

Purpose

Negates an Oracle NUMBER.

Syntax

sword OCINumberNeg ( OCIError              *err, 
                     CONST OCINumber       *number, 
                     OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

NUMBER to negate.

result (OUT)

Contains negated value of number.

Comments

This function returns an error if either of the NUMBER arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberAbs(), OCINumberSign()

OCINumberPower()

Purpose

Raises a given base to a given exponent.

Syntax

sword OCINumberPower ( OCIError              *err,
                       CONST OCINumber       *base, 
                       CONST OCINumber       *number, 
                       OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

base (IN)

Base of the exponentiation.

number (IN)

Exponent to which the base is to be raised.

result (OUT)

Output of exponentiation.

Comments

This function returns an error if any of the NUMBER arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberExp()

OCINumberPrec()

Purpose

Rounds an OCINumber to a specified number of decimal digits.

Syntax

sword OCINumberPrec ( OCIError *err, 
                      CONST OCINumber *number,
                      eword nDigs, 
                      OCINumber *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

The number for which to set precision.

nDigs (IN)

The number of decimal digits desired in the result.

result (OUT)

The result.

Comments

Performs a floating point round with respect to the number of digits.

This function returns an error any of the number arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberRound()

OCINumberRound()

Purpose

Rounds an Oracle NUMBER to a specified decimal place.

Syntax

sword OCINumberRound ( OCIError              *err,
                       CONST OCINumber       *number,
                       sword                 decplace,
                       OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

NUMBER to round.

decplace (IN)

Number of decimal digits to the right of the decimal point to round to. Negative values are allowed.

result (OUT)

Output of rounding.

Comments

This function returns an error if any of the NUMBER arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberTrunc()

OCINumberSetPi()

Purpose

Sets an OCINumber to Pi.

Syntax

void OCINumberSetPi ( OCIError *err, 
                      OCINumber *num );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

num (OUT)

NUMBER set to the value of Pi.

Comments

Initializes the given NUMBER to the value of Pi.

Related Functions

OCIErrorGet()

OCINumberSetZero()

Purpose

Initializes an Oracle NUMBER to zero.

Syntax

void OCINumberSetZero ( OCIError      *err
                        OCINumber     *num );

Parameters

err (IN)

A valid OCI error handle. This function does not check for errors because the function will never produce an error.

num (IN/OUT)

NUMBER to initialize to zero value.

Comments

None.

Related Functions

OCIErrorGet()

OCINumberShift()

Purpose

Multiplies a NUMBER by a power of 10 by shifting it a specified number of decimal places.

Syntax

sword OCINumberShift ( OCIError         *err, 
                       CONST OCINumber  *number,
                       CONST sword      nDig,
                       OCINumber        *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Oracle NUMBER to be shifted.

nDig (IN)

Number of decimal places to shift.

result (OUT)

Shift result.

Comments

Multiplies number by 10^nDig and sets product to the result.

This function returns an error if the input number is NULL.

Related Functions

OCIErrorGet()

OCINumberSign()

Purpose

Gets sign of an Oracle NUMBER.

Syntax

sword OCINumberSign ( OCIError             *err, 
                      CONST OCINumber      *number, 
                      sword                *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

NUMBER whose sign is returned.

result (OUT)

Possible values:

Table 18-14 Values of result

Value of number	*Output in result* parameter**
number < 0	-1
number == 0	0
number > 0	1

Comments

This function returns an error if number or result is NULL.

Related Functions

OCIErrorGet(), OCINumberAbs()

OCINumberSin()

Purpose

Computes the sine in radians of an Oracle NUMBER.

Syntax

sword OCINumberSin ( OCIError              *err, 
                     CONST OCINumber       *number, 
                     OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Argument of the sine in radians.

result (OUT)

Result of the sine.

Comments

This function returns an error if either of the NUMBER arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberArcSin()

OCINumberSqrt()

Purpose

Computes the square root of an Oracle NUMBER.

Syntax

sword OCINumberSqrt ( OCIError           *err,
                     CONST OCINumber     *number, 
                     OCINumber           *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Input NUMBER.

result (OUT)

Output which will contain the square root of the input NUMBER.

Comments

This function returns an error if number is NULL or number is negative.

Related Functions

OCIErrorGet(), OCINumberPower()

OCINumberSub()

Purpose

Subtract two Oracle NUMBERs.

Syntax

sword OCINumberSub ( OCIError             *err,
                     CONST OCINumber      *number1, 
                     CONST OCINumber      *number2, 
                     OCINumber            *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number1, number2 (IN)

This function subtracts number2 from number1.

result (OUT)

Subtraction result.

Comments

Subtracts number2 from number1 and returns result in result.

This function returns an error if any of the NUMBER arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberAdd()

OCINumberTan()

Purpose

Computes the tangent in radians of an Oracle NUMBER.

Syntax

sword OCINumberTan ( OCIError              *err, 
                     CONST OCINumber       *number,
                     OCINumber             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Argument of the tangent in radians.

result (OUT)

Result of the tangent.

Comments

This function returns an error if any of the NUMBER arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberArcTan(), OCINumberArcTan2()

OCINumberToInt()

Purpose

Converts an Oracle NUMBER type to integer.

Syntax

sword OCINumberToInt ( OCIError              *err,
                       CONST OCINumber       *number,
                       uword                 rsl_length,
                       uword                 rsl_flag, 
                       dvoid                 *rsl );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

NUMBER to convert.

rsl_length (IN)

Size of the desired result.

rsl_flag (IN)

Flag that designates the sign of the output, as follows:

OCI_NUMBER_UNSIGNED - Unsigned values
OCI_NUMBER_SIGNED - Signed values

rsl (OUT)

Pointer to space for the result.

Comments

This is a native type conversion function. It converts the given Oracle NUMBER into an integer of the form xbn, such as ub2, ub4, or sb2.

This function returns an error if number or rsl is NULL, if number is too big (overflow) or too small (underflow), or if an invalid sign flag value is passed in rsl_flag.

Related Functions

OCIErrorGet(), OCINumberFromInt()

OCINumberToReal()

Purpose

Converts an Oracle NUMBER type to real.

Syntax

sword OCINumberToReal ( OCIError            *err,
                        CONST OCINumber     *number,
                        uword               rsl_length,
                        dvoid               *rsl );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

NUMBER to convert.

rsl_length (IN)

The size of the desired result, which equals sizeof({ float | double | long double}).

rsl (OUT)

Pointer to space for storing the result.

Comments

This is a native type conversion function. It converts an Oracle NUMBER into a machine-native real type. This function only converts NUMBERs up to LDBL_DIG, DBL_DIG, or FLT_DIG digits of precision and removes trailing zeroes. These constants are defined in float.h.

You must pass a valid OCINumber to this function. Otherwise, the result is undefined.

Related Functions

OCIErrorGet(), OCINumberFromReal()

OCINumberToRealArray()

Purpose

Converts an array of NUMBER to an array of real.

Syntax

sword OCINumberToRealArray ( OCIError         *err, 
                             CONST OCINumber  **number,
                             uword            elems, 
                             uword            rsl_length, 
                             dvoid            *rsl );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Pointer to array of NUMBER to be converted.

elems (IN)

Maximum number of NUMBER pointers.

rsl_length (IN)

The size of the desired result, that is, sizeof({ float | double | long double }).

rsl (OUT)

Pointer to array of space for storing the result.

Comments

Native type conversion function that converts an Oracle NUMBER into a machine-native real type. This function only converts numbers up to LDBL_DIG, DBL_DIG, or FLT_DIG digits of precision and removes trailing zeroes. The constants are defined in the float.h header file.

You must pass a valid OCINumber to this function. Otherwise, the result is undefined.

Returns

OCI_SUCCESS - the function completes successfully.
OCI_INVALID_HANDLE - if err is NULL.
OCI_ERROR - if number or rsl is NULL, or rsl_length is 0.

Related Functions

OCIErrorGet(), OCINumberToReal()

OCINumberToText()

Purpose

Converts an Oracle NUMBER to a character string according to a specified format.

Syntax

sword OCINumberToText ( OCIError             *err,
                        CONST OCINumber      *number, 
                        CONST OraText        *fmt, 
                        ub4                  fmt_length,
                        CONST OraText        *nls_params, 
                        ub4                  nls_p_length,
                        ub4                  *buf_size, 
                        text                 *buf );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Oracle NUMBER to convert.

fmt (IN)

Conversion format.

fmt_length (IN)

Length of the fmt parameter.

nls_params (IN)

Global Support format specification. If it is a NULL string ((text *)0 ), then the default parameters for the session is used.

nls_p_length (IN)

Length of the nls_params parameter.

buf_size (IN)

Size of the buffer.

buf (OUT)

Buffer into which the converted string is placed.

Comments

Refer to the TO_NUMBER conversion function described in the Oracle Database SQL Reference for a description of format and Global Support parameters.

The converted number string is stored in buf, up to a maximum of buf_size bytes. This function returns an error if:

number or buf is NULL
buffer is too small
invalid format or invalid multibyte format is passed
number to text translation for given format causes an overflow

Related Functions

OCIErrorGet(), OCINumberFromText()

OCINumberTrunc()

Purpose

Truncates an Oracle NUMBER at a specified decimal place.

Syntax

sword OCINumberTrunc ( OCIError             *err,
                       CONST OCINumber      *number, 
                       sword                decplace,
                       OCINumber            *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

number (IN)

Input NUMBER.

decplace (IN)

Number of decimal digits to the right of the decimal point at which to truncate. Negative values are allowed.

result (OUT)

Output of truncation.

Comments

This function returns an error if any of the NUMBER arguments is NULL.

Related Functions

OCIErrorGet(), OCINumberRound()