/** Maximum latitudinal overshoot accepted */
export declare const PJ_EPS_LAT = 1e-12;
export declare const M_PI = 3.141592653589793;
export declare const M_1_PI = 0.3183098861837907;
export declare const M_PI_2 = 1.5707963267948966;
export declare const M_PI_4 = 0.7853981633974483;
export declare const M_2_PI = 0.6366197723675814;
export declare const M_SQRT2 = 1.4142135623730951;
export declare const M_FORTPI = 0.7853981633974483;
export declare const M_HALFPI = 1.5707963267948966;
export declare const M_PI_HALFPI = 4.71238898038469;
export declare const M_TWOPI = 6.283185307179586;
export declare const M_TWO_D_PI = 0.6366197723675814;
export declare const M_TWOPI_HALFPI = 7.853981633974483;
/** datum_type values */
export declare const PJD_UNKNOWN = 0;
export declare const PJD_3PARAM = 1;
export declare const PJD_7PARAM = 2;
export declare const PJD_GRIDSHIFT = 3;
export declare const PJD_WGS84 = 4;
export declare const GRAD_TO_RAD = 0.015707963267948967;
export declare const RAD_TO_DEG = 57.29577951308232;
export declare const R2D = 57.29577951308232;
export declare const DEG_TO_RAD = 0.017453292519943295;
export declare const D2R = 0.017453292519943295;
export declare const LinearUnitDesc: {
    readonly mm: 0.001;
    readonly cm: 0.01;
    readonly m: 1;
    readonly meter: 1;
    readonly metre: 1;
    readonly ft: 0.3048;
    readonly 'us-ft': 0.3048006096012192;
    readonly fath: 1.8288;
    readonly kmi: 1852;
    readonly 'us-ch': 20.11684023368047;
    readonly 'us-mi': 1609.347218694437;
    readonly km: 1000;
    readonly 'ind-ft': 0.30479841;
    readonly 'ind-yd': 0.91439523;
    readonly mi: 1609.344;
    readonly yd: 0.9144;
    readonly ch: 20.1168;
    readonly link: 0.201168;
    readonly dm: 0.1;
    readonly in: 0.0254;
    readonly 'us-in': 0.025400050800101;
    readonly 'us-yd': 0.914401828803658;
    readonly 'ind-ch': 20.11669506;
};
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