ANSI C Math Library. More...

Functions list
double	fabs (double num)
	Calculates floating point abolute value of given number. More...

double	floor (double num)
	Rounds a number DOWN to the nearest integer. More...

double	ceil (double num)
	Rounds a number UP to the nearest integer. More...

double	frexp (double num, int16_t *exp_ptr)
	Function splits a floating-point number. More...

double	ldexp (double num, int16_t new_exp)
	Calculates the result of multiplying the floating-point number by 2 raised to the power n. More...

double	modf (double num, double *int_ptr)
	Splits argument num split to the fractional part (function return value) and integer part (in number int_ptr). More...

double	sqrt (double num)
	Calculates square root of given number. More...

double	atan (double num)
	Calculates arc tangent of given number. More...

double	asin (double num)
	Calculates the arc sine of given number, in range [-1..+1]. More...

double	acos (double num)
	Calculates the arccosine of given number, in range [-1..+1]. More...

double	atan2 (double y, double x)
	Calculates the arctangent of given number, in range [-1..+1]. More...

double	sin (double num)
	Calculates the sine of a given angle (in radians). More...

double	cos (double num)
	Calculates the cosine of a given angle (in radians). More...

double	tan (double num)
	Calculates the tangent of given angle (in radians). More...

double	exp (double pow)
	Calculates the number e raised to the power of argument power. More...

double	log (double num)
	Calculates the natural logarithm - ln( num ). More...

double	log10 (double num)
	Calculates the base 10 logarithm. More...

double	pow (double num, double pow)
	Calculates the power of a number. More...

double	sinh (double num)
	Calculates the hyperbolic sine of a given number. If the value of num is too large (if overflow occurs), the function fails. More...

double	cosh (double num)
	Calculates the hyperbolic cosine of given number. More...

double	tanh (double num)
	Calculates the hyperbolic tangent of given number. More...

Detailed Description

ANSI C Math Library provides a set of standard ANSI C library functions for floating point math handling.

Function Documentation

◆ fabs()

double fabs ( double num )

The fabs function computes the absolute value of a floating-point number num.

Calculates floating point abolute value of given number.

The fabs function computes the absolute value of a floating-point number num.

Parameters

[in] num Number which the absolute value is calculated for.

Returns: The fabs function returns the absolute value of num.

◆ floor()

double floor ( double num )

The floor function computes the largeht integral value not greater than num.

Rounds a number DOWN to the nearest integer.

The floor function computes the largeht integral value not greater than num.

Parameters

[in] num Number to be rounded.

Returns: The floor function returns the largest integral value not greater than num. expressed as a double.

◆ ceil()

double ceil ( double num )

The ceil function computes the smallest integral value not less than num.

Rounds a number UP to the nearest integer.

The ceil function computes the smallest integral value not less than num.

Parameters

[in] num Number to be rounded.

Returns: The ceil function returns the smallest integral value not less than num, expressed as a double.

◆ frexp()

double frexp	(	double	num,
		int16_t *	exp_ptr
	)

The frexp function breaks a floating-point number into a normalized fraction and an integral power of 2. It stores the integer in the int object pointed to by exp_ptr.

Function splits a floating-point number.

The frexp function breaks a floating-point number into a normalized fraction and an integral power of 2. It stores the integer in the int object pointed to by exp_ptr.

Parameters

[in]	num	Floating point number that gets split.
[in]	exp_ptr	Pointer to variable in which the exponent gets stored.

Returns: The frexp function returns the value x, such that x is a double with magnitude in the interval [1/2, 1) or zero, and value equals x times 2 raised to the power *exp. If value is zero, both parts of the result are zero.

◆ ldexp()

double ldexp	(	double	num,
		int16_t	new_exp
	)

The ldexp function multiplies a tloating-point number by an integral power of 2. A range error may occur.

Calculates the result of multiplying the floating-point number by 2 raised to the power n.

The ldexp function multiplies a tloating-point number by an integral power of 2. A range error may occur.

Parameters

[in]	num	Floating point number to be multiplied.
[in]	new_exp	Integral exponent.

Returns: The ldexp function returns the value of num times 2 raised to the power new_exp.

◆ modf()

double modf	(	double	num,
		double *	int_ptr
	)

The modf function breaks the argument value into integral and fractional parts, each of which has the same sign as the argument. It stores the integral part as a double in the object pointed to by int_ptr.

Splits argument num split to the fractional part (function return value) and integer part (in number int_ptr).

The modf function breaks the argument value into integral and fractional parts, each of which has the same sign as the argument. It stores the integral part as a double in the object pointed to by int_ptr.

Parameters

[in]	num	Number that gets split.
[in]	int_ptr	Pointer to variable in which the integer part gets stored.

Returns: The modf function returns the signed fractional part of num.

◆ sqrt()

double sqrt ( double num )

The sqrt function computes the nonnegative square root of num. A domain error occurs if the argument is negative.

Calculates square root of given number

The sqrt function computes the nonnegative square root of num. A domain error occurs if the argument is negative.

Parameters

[in] num Number the square root is calculated for.

Returns: The sqrt function returns the value of the square root.

◆ atan()

double atan ( double num )

The atan function computes the principal value of the arc tangent of num.

Calculates arc tangent of given number.

The atan function computes the principal value of the arc tangent of num.

Parameters

[in] num Number the arctangent is calculated for.

Returns: The atan function returns the arc tangent in the range [-?/2, +?/2] radians.

◆ asin()

double asin ( double num )

The asin function computes the principal value of the arc sine of num. A domain error occurs for arguments not in the range [-1, +1].

Calculates the arc sine of given number, in range [-1..+1].

The asin function computes the principal value of the arc sine of num. A domain error occurs for arguments not in the range [-1, +1].

Parameters

[in] num Number the arcsine is calculated for.

Returns: The asin function returns the arc sine in the range [-?/2. +?/2] radians.

◆ acos()

double acos ( double num )

The acos tunction computes the principal value of the arc cosine of num. A domain error occurs for arguments not in the range [-1, +1].

Calculates the arccosine of given number, in range [-1..+1].

The acos tunction computes the principal value of the arc cosine of num. A domain error occurs for arguments not in the range [-1, +1].

Parameters

[in] num Number which the arc cosine is calculated for.

Returns: The acos function returns the arc cosine in the range [0, ?] radians.

◆ atan2()

double atan2	(	double	y,
		double	x
	)

The atan2 function computes the principal value of the arc tangent of y/x, using the signs of both arguments to determine the quadrant of the return value. A domain error may occur if both arguments are zero.

Calculates the arctangent of given number, in range [-1..+1].

The atan2 function computes the principal value of the arc tangent of y/x, using the signs of both arguments to determine the quadrant of the return value. A domain error may occur if both arguments are zero.

Parameters

[in]	y	First value.
[in]	x	Second value.

Returns: The atan2 function returns the arc tangent of y/x in the range [-?, +?] radians.

◆ sin()

double sin ( double num )

The sin function computes the sine of num (measured in radians).

Calculates the sine of a given angle (in radians).

The sin function computes the sine of num (measured in radians).

Parameters

[in] num Number the sine is calculated for.

Returns: The sin function returns the sine value.

◆ cos()

double cos ( double num )

The cos function computes the cosine of num (measured in radians).

Calculates the cosine of a given angle (in radians).

The cos function computes the cosine of num (measured in radians).

Parameters

[in] num Number the cosine is calculated for.

Returns: The cos function returns the cosine value.

◆ tan()

double tan ( double num )

The tan function returns the tangent of num (measured in radians).

Calculates the tangent of given angle (in radians).

The tan function returns the tangent of num (measured in radians).

Parameters

[in] num Number the tangent is calculated for.

Returns: The tan function returns the tangent value.

◆ exp()

double exp ( double pow )

The exp function computes the exponential function of pow. A range error occurs if the magnitude of pow is too large.

Calculates the number e raised to the power of argument power.

The exp function computes the exponential function of pow. A range error occurs if the magnitude of pow is too large.

Parameters

[in] pow Power which the e constant is to be raised for.

Returns: The exp function returns the exponential value raised to the power of pow.

◆ log()

double log ( double num )

The log function compute5 the natural logarithm of num. A domain error occurs if the argument is negative. A range error might occur if the argument is zero.

Calculates the natural logarithm - ln( num ).

The log function compute5 the natural logarithm of num. A domain error occurs if the argument is negative. A range error might occur if the argument is zero.

Parameters

[in] num Number the natural logaritm is calculated from.

Returns: The log function returns the natural logarithm.

◆ log10()

double log10 ( double num )

The log10 function computes the base-ten logarithm of x. A domain error occurs if the argument is negative. A range error may occur if the argument is zero.

Calculates the base 10 logarithm.

The log10 function computes the base-ten logarithm of x. A domain error occurs if the argument is negative. A range error may occur if the argument is zero.

Parameters

[in] num Number the base 10 logaritm is calculated from.

Returns: The log10 function returns the base-ten logarithm.

◆ pow()

double pow	(	double	num,
		double	pow
	)

The pow function computes num raised to the power pow. A domain error occurs if num is negative and pow is not an integral value. A domain error occurs if the result cannot be represented when num is zero and pow is less than or equal to zero. A range error might occur.

Calculates the power of a number

The pow function computes num raised to the power pow. A domain error occurs if num is negative and pow is not an integral value. A domain error occurs if the result cannot be represented when num is zero and pow is less than or equal to zero. A range error might occur.

Parameters

[in]	num	Number to be raised.
[in]	pow	Number which the num is raised to.

Returns: The pow tunction returns the value of num raised to the power pow.

◆ sinh()

double sinh ( double num )

The sinh function computes the hyperbolic sine of num. A range error occurs if the magnitude of num is too large.

Calculates the hyperbolic sine of a given number. If the value of num is too large (if overflow occurs), the function fails.

The sinh function computes the hyperbolic sine of num. A range error occurs if the magnitude of num is too large.

Parameters

[in] num Number the hyperbolic sine is calculated for.

Returns: The sinh function returns the hyperbolic sine value.

◆ cosh()

double cosh ( double num )

The cash function computes the hyperbolic cosine of num. A range error occurs if the magnitude of num is too large.

Calculates the hyperbolic cosine of given number.

The cash function computes the hyperbolic cosine of num. A range error occurs if the magnitude of num is too large.

Parameters

[in] num Number the hyperbolic cosine is calculated for.

Returns: The cash function returns the hyperbolic cosine value.

◆ tanh()

double tanh ( double num )

The tanh function computes the hyperbolic tangent of num.

Calculates the hyperbolic tangent of given number.

The tanh function computes the hyperbolic tangent of num.

Parameters

[in] num Number the hyperbolic tangent is calculated for.

Returns: The tanh function returns the hyperbolic tangent value.

Functions list

Detailed Description

Function Documentation

◆ fabs()

◆ floor()

◆ ceil()

◆ frexp()

◆ ldexp()

◆ modf()

◆ sqrt()

◆ atan()

◆ asin()

◆ acos()

◆ atan2()

◆ sin()

◆ cos()

◆ tan()

◆ exp()

◆ log()

◆ log10()

◆ pow()

◆ sinh()

◆ cosh()

◆ tanh()