a85bc55a7f
The long double aliases of double functions are only exposed as aliases if LDBL_MANT_DIG is 53 (same as DBL_MANT_DIG). Without float.h included these files were not exposing weak aliases as expected, leading to link failures if programs use the *l functions. This should fix editors/calligra on targets with 64-bit long double, which uses erfl and erfcl. Found on powerpc64. Reviewed by: kargl@