Research V7 development

Work on file usr/src/libF77/r_sin.c
Research V7 development

Work on file usr/src/libF77/r_sign.c
Research V7 development

Work on file usr/src/libF77/r_mod.c
Research V7 development

Work on file usr/src/libF77/r_nint.c
Research V7 development

Work on file usr/src/libF77/r_sqrt.c
Research V7 development

Work on file usr/src/libF77/r_sinh.c
Research V7 development

Work on file usr/src/libF77/r_tanh.c
Research V7 development

Work on file usr/src/libF77/r_tan.c
Research V7 development

Work on file usr/src/libF77/s_cat.c
Research V7 development

Work on file usr/src/libF77/s_cmp.c
Research V7 development

Work on file usr/src/libF77/s_copy.c
Research V7 development

Work on file usr/src/libF77/s_paus.c
Research V7 development

Work on file usr/src/libF77/s_stop.c
Research V7 development

Work on file usr/src/libF77/mklib
Research V7 development

Work on file usr/src/libF77/signal_.c
Research V7 development

Work on file usr/src/libF77/z_cos.c
Research V7 development

Work on file usr/src/libF77/compall
Research V7 development

Work on file usr/src/libF77/z_abs.c
Research V7 development

Work on file usr/src/libF77/z_log.c
Research V7 development

Work on file usr/src/libF77/z_div.c