Error: fmm.f95, line 402: 
Local variable I of PURE procedure SEVALSINGLE has the SAVE attribute
Errors in declarations, no further processing for SEVALSINGLE
Error: fmm.f95, line 1300: 
Reference to impure subroutine BRENTZEROSINGLE from pure procedure ZEROINSINGLE
Error: fmm.f95, line 1481:
Reference to impure subroutine BRENTMINSINGLE from pure procedure FMINSINGLE
Error: fmm.f95, line 2256:
Local variable I of PURE procedure SEVALDOUBLE has the SAVE attribute
Errors in declarations, no further processing for SEVALDOUBLE
Error: fmm.f95, line 3155:
Reference to impure subroutine BRENTZERODOUBLE from pure procedure ZEROINDOUBLE
Error: fmm.f95, line 3334:
Reference to impure subroutine BRENTMINDOUBLE from pure procedure FMINDOUBLE
[F error termination]