SpecialQuantities

Functions
TRIO_PUBLIC_NAN int	trio_isnan (double number)
	Check for NaN. More...
TRIO_PUBLIC_NAN int	trio_isinf (double number)
	Check for infinity. More...
TRIO_PUBLIC_NAN int	trio_isfinite (double number)
	Check for finity. More...
TRIO_PUBLIC_NAN int	trio_signbit (double number)
	Examine the sign of a number. More...
TRIO_PUBLIC_NAN int	trio_fpclassify (double number)
	Examine the class of a number. More...
TRIO_PUBLIC_NAN double	trio_nzero (void)
	Generate negative zero. More...
TRIO_PUBLIC_NAN double	trio_pinf (void)
	Generate positive infinity. More...
TRIO_PUBLIC_NAN double	trio_ninf (void)
	Generate negative infinity. More...
TRIO_PUBLIC_NAN double	trio_nan (void)
	Generate NaN. More...

Detailed Description

Function Documentation

TRIO_PUBLIC_NAN int trio_fpclassify

(

double

number

)

Examine the class of a number.

Parameters

number

An arbitrary floating-point number.

Returns

Enumerable value indicating the class of number

TRIO_PUBLIC_NAN int trio_isfinite

(

double

number

)

Check for finity.

Parameters

number

An arbitrary floating-point number.

Returns

Boolean value indicating whether or not the number is a finite.

TRIO_PUBLIC_NAN int trio_isinf

(

double

number

)

Check for infinity.

Parameters

number

An arbitrary floating-point number.

Returns

1 if positive infinity, -1 if negative infinity, 0 otherwise.

TRIO_PUBLIC_NAN int trio_isnan

(

double

number

)

Check for NaN.

Parameters

number

An arbitrary floating-point number.

Returns

Boolean value indicating whether or not the number is a NaN.

TRIO_PUBLIC_NAN double trio_nan

(

void

)

Generate NaN.

Returns

Floating-point representation of NaN.

References trio_pinf().

TRIO_PUBLIC_NAN double trio_ninf

(

void

)

Generate negative infinity.

Returns

Floating-point value of negative infinity.

References trio_pinf().

TRIO_PUBLIC_NAN double trio_nzero

(

void

)

Generate negative zero.

Returns

Floating-point representation of negative zero.

TRIO_PUBLIC_NAN double trio_pinf

(

void

)

Generate positive infinity.

Returns

Floating-point representation of positive infinity.

Referenced by trio_nan(), and trio_ninf().

TRIO_PUBLIC_NAN int trio_signbit

(

double

number

)

Examine the sign of a number.

Parameters

number

An arbitrary floating-point number.

Returns

Boolean value indicating whether or not the number has the sign bit set (i.e. is negative).