fmaxmag

Interface Definition

C interface:

float fmaxmagf(float x, float y);

double fmaxmag(double x, double y);

Parameters

Return Value

The input parameter (x or y) whose absolute value is larger is returned. If |x| > |y|, the return value is x; if |y| > |x|, the return value is y. Otherwise, the function behaves like fmax(x, y).

• If both x and y are NaN, the return value is +NaN.
• If x is NaN and y is any non-NaN value, the return value is y.
• If x is any non-NaN valueN and y is NaN, the return value is x.

Dependencies

C: "km.h"

Examples

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    // typical usage
    printf("fmaxmag(1.0, 2.0) = %.15f\n", fmaxmag(1.0, 2.0));
    printf("fmaxmag(3.0, 2.0) = %.15f\n", fmaxmag(3.0, 2.0));
    // special handling
    printf("fmaxmag(NAN, -NAN) = %.15f\n", fmaxmag(NAN, -NAN));
    printf("fmaxmag(NAN, -INFINITY) = %.15f\n", fmaxmag(NAN, -INFINITY));

result
    /* 
     * fmaxmag(1.0, 2.0) = 2.000000000000000
     * fmaxmag(3.0, 2.0) = 3.000000000000000
     * fmaxmag(NAN, -NAN) = nan
     * fmaxmag(NAN, -INFINITY) = -inf
     * */