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 - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30587-f85873d515) Lines: 1467 1530 95.9 % Date: 2025-12-28 09:21:53 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296164
RgX_gtofp_bit	7028882
RgX_normalize1	35733
X2XP1	5989630
ZX_Uspensky	1313683
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15198
ZX_graeffe	5390
ZX_realroots_irred	48557
ZX_rescale2prim	2233496
ZX_sturm	6395
ZX_sturm_i	122972
ZX_sturm_irred	116577
ZX_sturmpart	1128190
ZX_to_ZiX	16449468
ZiX_sqr	99006228
_gen_nored	11200423
_gen_one	14471870
_gen_zero	325941
_intervalcmp	0
_mp_add	24660796
_mp_cmul	34763470
_mp_mul	4374567
_mp_sqr	6298014
_mp_sub	0
_sqrtnr	22590
a_posteriori_errors	536973
abs_update	8003410
abs_update_r	778517
all_roots	535868
append_clone	1613489
bkeval_single_power	5234979
check_ab	1178819
checkbound	2354768
checkvalidpol	266892
clean_roots	535916
cleanroots	231763
cmp_complex_appr	2237216
conformal_basecase	1403458
conformal_mapping	467780
conformal_pol	1403576
dblexp	6547072
dbllog2	302017843
dft	502226
dual_modulus	1012171
eval_rel_pol	13133956
fft	14154452
fft2	7462
findpower	40943316
fix_roots	536972
fix_roots1	398347
fujiwara_bound	2270948
fujiwara_bound_real	1406637
graeffe	49492809
homothetie	1609583
homothetie2n	9954269
homothetie_gauss	36485636
ind_maxlog2	902423
initdft	996062
isexactpol	239753
isexactscalar	931714
isreal	961617
isvalidcoeff	1228149
logmax_modulus	4449502
logmin_modulus	1614327
logmodulus	606534
logpre_modulus	606533
logradius	493832
lower_bound	40943067
mydbllog2i	226358586
mydbllog2r	56170001
mydbllogr	9544385
mygprec	63740200
mygprec_absolute	4337324
mygprec_special	536978
mygprecrc	215118787
mygprecrc_special	2178242
myshiftic	135775444
myshiftrc	35494495
newton_polygon	5505126
optimize_split	493836
parameters	493835
pol_to_gaussint	17583406
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166677
quicktofp	6976639
realroots	50627
refine_F	502218
refine_H	2459896
root_error	1911591
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288091
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494198
split_0_1	468145
split_0_2	468145
split_1	467782
split_2	493834
split_complete	1525366
split_fromU	493836
split_pols	166685
splitcauchy	166689
splitpoleval	5235005
tocomplex	1213140
update_radius	493830
usp	1125876

Generated by: LCOV version 1.16