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 - subfield.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30622-caa25a75db) Lines: 927 946 98.0 % Date: 2026-01-22 09:18:00 Functions: 51 51 100.0 % Legend: Lines: hit not hit

Function Name	Hit count
RgV_negtranslate	678
RgV_translate	678
RgXY_to_RgC	37937
_subfield	1463
append	30357
bound_for_coeff	27530
calc_block	28669
chinese_retrieve_pol	28005
choose_prime	26523
cmsubfield_get_roots	1088
compute_data	27530
cycle_power_to_perm	46573
embedding	28005
field_is_contained	19474
fix_var	25626
galoissubfieldcm	208
get_bezout	26509
heap_climb	1764
heap_descend	2569
heap_pop	1421
heap_push	1232
im_block_by_perm	21307
init_primedata	26509
init_traces	26509
maxgen_subfields	287
nfsubfields	329
nfsubfields0	28321
nfsubfields_fa	259
nfsubfieldscm	1151
nfsubfieldsmax	154
ok_coeffs	35450
perm_mul_i	227100
polsimplify	35450
poltrace	31631
print_block_system	28343
quadsubfieldcm	140
rootsuptoconj	280
setvarn2	35
subfield	48682
subfield_generator	1873
subfields_cleanup	1564
subfields_get_ero	287
subfields_get_fa	592
subfields_of_given_degree	26852
subfields_poldata	26509
subfieldsall	595
test_block	48004
trace	151332
try_imag	278
try_subfield_generator	3315
twoembequation	2580

Generated by: LCOV version 1.16