Basic Functions and Constants

Functions
double	clipm_math_arctan_0to2pi (double x, double y)
	Compute the arcus tangens for the whole angle range.
int	clipm_math_round_d2i (double in)
	Round a double value to the nearest integer.
cpl_size	clipm_math_round_d2cplsize (double in)
	Round a double value to the nearest cpl_size.

Detailed Description

Copyright

SPDX-FileCopyrightText: 2026 European Southern Observatory (ESO) SPDX-License-Identifier: LGPL-3.0-only

This module provides functions for basic mathematical operations, and definitions of mathematical constants. These definitions are made for the case that they are not available in <math.h>.

Synopsis:

#include "ifw/odp/clipm/clipm_math.h"

Function Documentation

clipm_math_arctan_0to2pi()

double clipm_math_arctan_0to2pi	(	double	x,
		double	y )

Compute the arcus tangens for the whole angle range.

Parameters

x	Adjacent leg
y	Opposite leg

Returns

The angle in the range

clipm_math_round_d2cplsize()

cpl_size clipm_math_round_d2cplsize

(

double

in

)

Round a double value to the nearest cpl_size.

Parameters

in	Input value

Returns

The rounded value

clipm_math_round_d2i()

int clipm_math_round_d2i

(

double

in

)

Round a double value to the nearest integer.

Parameters

in	Input value

Returns

The rounded value

This function is intended to replace the non-ANSI-C function rint().