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 30604-e5d817ee12) Lines: 1467 1530 95.9 % Date: 2026-01-10 09:22:24 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	7028992
RgX_normalize1	35731
X2XP1	5990008
ZX_Uspensky	1313788
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5390
ZX_realroots_irred	48563
ZX_rescale2prim	2233592
ZX_sturm	6395
ZX_sturm_i	122975
ZX_sturm_irred	116580
ZX_sturmpart	1128297
ZX_to_ZiX	16448867
ZiX_sqr	99005127
_gen_nored	11197671
_gen_one	14470027
_gen_zero	326010
_intervalcmp	0
_mp_add	24662367
_mp_cmul	34760242
_mp_mul	4374544
_mp_sqr	6298114
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	536974
abs_update	8003223
abs_update_r	778522
all_roots	535872
append_clone	1613493
bkeval_single_power	5234532
check_ab	1178924
checkbound	2354978
checkvalidpol	266890
clean_roots	535920
cleanroots	231763
cmp_complex_appr	2237208
conformal_basecase	1403466
conformal_mapping	467782
conformal_pol	1403586
dblexp	6547141
dbllog2	302016991
dft	502220
dual_modulus	1012149
eval_rel_pol	13134014
fft	14154625
fft2	7462
findpower	40943539
fix_roots	536974
fix_roots1	398348
fujiwara_bound	2271069
fujiwara_bound_real	1406771
graeffe	49495230
homothetie	1609579
homothetie2n	9954312
homothetie_gauss	36486950
ind_maxlog2	902387
initdft	996051
isexactpol	239753
isexactscalar	931714
isreal	961615
isvalidcoeff	1228143
logmax_modulus	4449479
logmin_modulus	1614322
logmodulus	606543
logpre_modulus	606540
logradius	493825
lower_bound	40942654
mydbllog2i	226357518
mydbllog2r	56170055
mydbllogr	9544011
mygprec	63739563
mygprec_absolute	4337398
mygprec_special	536979
mygprecrc	215118232
mygprecrc_special	2178249
myshiftic	135796139
myshiftrc	35495029
newton_polygon	5505181
optimize_split	493833
parameters	493832
pol_to_gaussint	17583361
polgraeffe	14
polmod_to_embed	84
polrootsbound	27130
polrootsbound_i	27123
polsolve	166689
quicktofp	6976810
realroots	50627
refine_F	502220
refine_H	2459878
root_error	1911581
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288109
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494196
split_0_1	468144
split_0_2	468145
split_1	467783
split_2	493832
split_complete	1525360
split_fromU	493833
split_pols	166691
splitcauchy	166696
splitpoleval	5235027
tocomplex	1213143
update_radius	493831
usp	1125980

Generated by: LCOV version 1.16