In cdrvsg2stg.f, ddrvsg2stg.f, sdrvsg2stg.f, and zdrvsg2stg.f, the
three RANGE='A'/'V'/'I' calls to CHPGVX, DSPGVX, SSPGVX, and ZHPGVX
were passing INFO as the output error argument instead of IINFO.
The error-check block immediately following each call tests IINFO.NE.0,
but IINFO was never updated by the routine, so errors were silently
ignored. Additionally, the block sets INFO = ABS(IINFO), which would
overwrite the value ZHPGVX/xSPGVX had written into INFO with the
stale value of IINFO.
All other driver calls in these files (ZHEGV, ZHEGVD, ZHEGVX, ZHPGV,
ZHPGVD, ZHBGV, ZHBGVD, ZHBGVX and their s/d/c equivalents) correctly
use IINFO. This commit brings the xSPGVX/xHPGVX calls into line with
the established pattern.
Affected routines (3 call sites each):
CHPGVX in cdrvsg2stg.f
DSPGVX in ddrvsg2stg.f
SSPGVX in sdrvsg2stg.f
ZHPGVX in zdrvsg2stg.f
NAKATA Maho
4e013d710c