rt_util_dbl_trunc_warning()

int rt_util_dbl_trunc_warning	(	double	initialvalue,
		int32_t	checkvalint,
		uint32_t	checkvaluint,
		float	checkvalfloat,
		double	checkvaldouble,
		rt_pixtype	pixtype
	)

Definition at line 676 of file rt_util.c.

  {
        int result = 0;
 
        switch (pixtype) {
                case PT_1BB:
                case PT_2BUI:
                case PT_4BUI:
                case PT_8BSI:
                case PT_8BUI:
                case PT_16BSI:
                case PT_16BUI:
                case PT_32BSI: {
                        if (fabs(checkvalint - initialvalue) >= 1) {
#if POSTGIS_RASTER_WARN_ON_TRUNCATION > 0
                                rtwarn("Value set for %s band got clamped from %f to %d",
                                        rt_pixtype_name(pixtype),
                                        initialvalue, checkvalint
                                );
#endif
                                result = 1;
                        }
                        else if (checkvalint != initialvalue)
                        {
#if POSTGIS_RASTER_WARN_ON_TRUNCATION > 0
                                rtwarn("Value set for %s band got truncated from %f to %d",
                                        rt_pixtype_name(pixtype),
                                        initialvalue, checkvalint
                                );
#endif
                                result = 1;
                        }
                        break;
                }
                case PT_32BUI: {
                        if (fabs(checkvaluint - initialvalue) >= 1) {
#if POSTGIS_RASTER_WARN_ON_TRUNCATION > 0
                                rtwarn("Value set for %s band got clamped from %f to %u",
                                        rt_pixtype_name(pixtype),
                                        initialvalue, checkvaluint
                                );
#endif
                                result = 1;
                        }
                        else if (checkvaluint != initialvalue)
                        {
#if POSTGIS_RASTER_WARN_ON_TRUNCATION > 0
                                rtwarn("Value set for %s band got truncated from %f to %u",
                                        rt_pixtype_name(pixtype),
                                        initialvalue, checkvaluint
                                );
#endif
                                result = 1;
                        }
                        break;
                }
                case PT_32BF: {
                        /*
                                For float, because the initial value is a double,
                                there is very often a difference between the desired value and the obtained one
                        */
                        if (FLT_NEQ(checkvalfloat, initialvalue)) {
#if POSTGIS_RASTER_WARN_ON_TRUNCATION > 0
                                rtwarn("Value set for %s band got converted from %f to %f",
                                        rt_pixtype_name(pixtype),
                                        initialvalue, checkvalfloat
                                );
#endif
                                result = 1;
                        }
                        break;
                }
                case PT_64BF: {
                        if (FLT_NEQ(checkvaldouble, initialvalue)) {
#if POSTGIS_RASTER_WARN_ON_TRUNCATION > 0
                                rtwarn("Value set for %s band got converted from %f to %f",
                                        rt_pixtype_name(pixtype),
                                        initialvalue, checkvaldouble
                                );
#endif
                                result = 1;
                        }
                        break;
                }
                case PT_END:
                        break;
        }
 
        return result;
}

References FLT_NEQ, PT_16BSI, PT_16BUI, PT_1BB, PT_2BUI, PT_32BF, PT_32BSI, PT_32BUI, PT_4BUI, PT_64BF, PT_8BSI, PT_8BUI, PT_END, result, rt_pixtype_name(), and rtwarn().

Referenced by rt_band_reclass(), rt_band_set_nodata(), rt_band_set_pixel(), and rt_raster_generate_new_band().

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