Merge branch 'PHP-7.4'

* PHP-7.4:
  Simplify expression and remove the possibility of div by 0

Author: smalyshev

ext/exif/exif.c

@@ -3368,7 +3368,7 @@ static int exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, cha
 				   have appropriate aperture information yet. */
 				if (ImageInfo->ApertureFNumber == 0) {
 					ImageInfo->ApertureFNumber
-						= (float)exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*log(2)*0.5);
+						= expf(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*logf(2.0)*0.5);
 				}
 				break;
 
@@ -3379,7 +3379,7 @@ static int exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, cha
 				  */
 				if (ImageInfo->ExposureTime == 0) {
 					ImageInfo->ExposureTime
-						= (float)(1/exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*log(2)));
+						= expf(-exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*logf(2.0));
 				}
 				break;
 			case TAG_EXPOSURETIME: