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 30773-2078653b96) Lines: 1467 1530 95.9 % Date: 2026-04-03 09:26:58 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296307
RgX_gtofp_bit	7048016
RgX_normalize1	35705
X2XP1	5990576
ZX_Uspensky	1313968
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15200
ZX_graeffe	5439
ZX_realroots_irred	48569
ZX_rescale2prim	2233781
ZX_sturm	6395
ZX_sturm_i	123065
ZX_sturm_irred	116670
ZX_sturmpart	1128371
ZX_to_ZiX	16491845
ZiX_sqr	99230973
_gen_nored	11200113
_gen_one	14472075
_gen_zero	326006
_intervalcmp	0
_mp_add	24660793
_mp_cmul	34761453
_mp_mul	4374452
_mp_sqr	6298475
_mp_sub	0
_sqrtnr	22593
a_posteriori_errors	537472
abs_update	8021299
abs_update_r	780114
all_roots	536366
append_clone	1616154
bkeval_single_power	5235549
check_ab	1178999
checkbound	2355128
checkvalidpol	267214
clean_roots	536411
cleanroots	231763
cmp_complex_appr	2241479
conformal_basecase	1406446
conformal_mapping	468775
conformal_pol	1406566
dblexp	6562479
dbllog2	304005440
dft	503321
dual_modulus	1014478
eval_rel_pol	13168397
fft	14194441
fft2	7462
findpower	41030115
fix_roots	537471
fix_roots1	398790
fujiwara_bound	2272064
fujiwara_bound_real	1407033
graeffe	49603574
homothetie	1613560
homothetie2n	9978981
homothetie_gauss	36564368
ind_maxlog2	904347
initdft	998244
isexactpol	240103
isexactscalar	934017
isreal	963698
isvalidcoeff	1230445
logmax_modulus	4458569
logmin_modulus	1617679
logmodulus	608214
logpre_modulus	608217
logradius	494921
lower_bound	41029411
mydbllog2i	226868763
mydbllog2r	57611930
mydbllogr	9565599
mygprec	63862746
mygprec_absolute	4344161
mygprec_special	537471
mygprecrc	215578631
mygprecrc_special	2181406
myshiftic	136080537
myshiftrc	35576579
newton_polygon	5520743
optimize_split	494925
parameters	494925
pol_to_gaussint	17627003
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166704
quicktofp	6981377
realroots	50627
refine_F	503315
refine_H	2464601
root_error	1914392
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297336
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495294
split_0_1	469144
split_0_2	469144
split_1	468776
split_2	494925
split_complete	1528057
split_fromU	494925
split_pols	166695
splitcauchy	166711
splitpoleval	5235273
tocomplex	1215861
update_radius	494925
usp	1126111

Generated by: LCOV version 1.16