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 30670-52869c8c38) Lines: 1467 1530 95.9 % Date: 2026-02-05 09:23:49 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296179
RgX_gtofp_bit	7029383
RgX_normalize1	35733
X2XP1	5989675
ZX_Uspensky	1313698
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5390
ZX_realroots_irred	48570
ZX_rescale2prim	2233473
ZX_sturm	6395
ZX_sturm_i	122977
ZX_sturm_irred	116583
ZX_sturmpart	1128195
ZX_to_ZiX	16447555
ZiX_sqr	99017681
_gen_nored	11205741
_gen_one	14474441
_gen_zero	326027
_intervalcmp	0
_mp_add	24663428
_mp_cmul	34775784
_mp_mul	4374509
_mp_sqr	6298453
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	536991
abs_update	8003485
abs_update_r	778576
all_roots	535885
append_clone	1613562
bkeval_single_power	5235843
check_ab	1178822
checkbound	2354773
checkvalidpol	266892
clean_roots	535934
cleanroots	231763
cmp_complex_appr	2237296
conformal_basecase	1403512
conformal_mapping	467797
conformal_pol	1403631
dblexp	6547446
dbllog2	302072977
dft	502238
dual_modulus	1012205
eval_rel_pol	13134880
fft	14155195
fft2	7462
findpower	40947626
fix_roots	536986
fix_roots1	398356
fujiwara_bound	2271114
fujiwara_bound_real	1406679
graeffe	49500738
homothetie	1609655
homothetie2n	9954886
homothetie_gauss	36491432
ind_maxlog2	902454
initdft	996089
isexactpol	239753
isexactscalar	931714
isreal	961646
isvalidcoeff	1228149
logmax_modulus	4449560
logmin_modulus	1614350
logmodulus	606571
logpre_modulus	606570
logradius	493846
lower_bound	40946847
mydbllog2i	226402579
mydbllog2r	56170916
mydbllogr	9544337
mygprec	63743593
mygprec_absolute	4337717
mygprec_special	536994
mygprecrc	215121732
mygprecrc_special	2178329
myshiftic	135832124
myshiftrc	35496468
newton_polygon	5505514
optimize_split	493850
parameters	493851
pol_to_gaussint	17584387
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166692
quicktofp	6977089
realroots	50627
refine_F	502236
refine_H	2459988
root_error	1911691
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288273
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494214
split_0_1	468159
split_0_2	468159
split_1	467798
split_2	493844
split_complete	1525416
split_fromU	493850
split_pols	166691
splitcauchy	166697
splitpoleval	5236111
tocomplex	1213232
update_radius	493850
usp	1125904

Generated by: LCOV version 1.16