Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - subcyclo.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30702-bddb8d6928) Lines: 609 656 92.8 % Date: 2026-02-23 02:23:56 Functions: 46 49 93.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_polsubcyclo_orbits	0
_Fl_subcyclo_orbits	0
znstar_bits	0
znstar_quotient	6
znsubgroupgenerators	15
enlarge_H	40
bnr_to_abgrp	44
max_order_ele	50
factor_Aurifeuille	54
znstar_reduce_modulus	130
factor_Aurifeuille_prime	310
Aurifeuille_init	364
factor_Aurifeuille_aux	364
galoiscyclo	396
vecmod_to_vecsmall	1759
znstar_small	1759
mod_to_small	2322
znstar_elts	3122
znstar_hnf	3122
znstar_hnf_elts	3122
znstar_hnf_generators	3428
polsubcyclo_g	28806
polsubcyclo	28848
gscycloconductor	42710
galoissubcyclo	42764
_itos	43027
subcyclo_nH	43039
polsubcyclo_cyclic	53726
polsubcyclo_complex_bound	69508
polsubcyclo_complex_roots	69508
polsubcyclo_roots	69508
polsubcyclo_start	70268
polsubcyclo_orbits	85290
znstar_cosets	94702
znstar_order	140475
znstar_conductor	146902
znstar_conductor_bits	147466
znstar_generate	215651
znstar_coset_func	236620
znstar_partial_bits	453658
znstar_partial_coset_bits	453658
znstar_coset_bits_inplace	455396
muliimod_sz	570704
znstar_partial_coset_bits_inplace	909054
lift_check_modulus	962732
order_H_x	970190
znstar_partial_coset_func	1145674
_subcyclo_orbits	3900128
polsubcyclo_powz	4649108

Generated by: LCOV version 1.16