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 30772-246cd0a587) Lines: 1467 1530 95.9 % Date: 2026-03-29 09:27:34 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5439
ZX_sturm	6395
fft2	7462
roots	8368
ZX_deg1root	15203
_sqrtnr	22596
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48565
realroots	50627
ZX_sturm_irred	116660
ZX_sturm_i	123054
split_pols	166694
polsolve	166702
splitcauchy	166708
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296301
_gen_zero	325984
fix_roots1	398793
split_1	468773
conformal_mapping	468776
split_0_1	469143
split_0_2	469144
logradius	494924
split_2	494924
parameters	494926
update_radius	494926
optimize_split	494927
split_fromU	494927
split_0	495294
dft	503319
refine_F	503321
all_roots	536366
clean_roots	536411
fix_roots	537469
a_posteriori_errors	537473
mygprec_special	537475
logmodulus	608218
logpre_modulus	608219
abs_update_r	780141
ind_maxlog2	904356
isexactscalar	934017
isreal	963701
initdft	998244
dual_modulus	1014485
usp	1126085
ZX_sturmpart	1128334
check_ab	1178961
tocomplex	1215881
isvalidcoeff	1230445
ZX_Uspensky	1313914
conformal_basecase	1406441
conformal_pol	1406562
fujiwara_bound_real	1406979
split_complete	1528062
homothetie	1613570
append_clone	1616168
logmin_modulus	1617670
root_error	1914426
mygprecrc_special	2181421
ZX_rescale2prim	2233828
cmp_complex_appr	2241509
fujiwara_bound	2271987
checkbound	2355052
refine_H	2464574
scalepol	4297367
mygprec_absolute	4344263
_mp_mul	4374484
logmax_modulus	4458591
bkeval_single_power	5235831
splitpoleval	5236429
newton_polygon	5520753
X2XP1	5990691
_mp_sqr	6298444
dblexp	6562501
quicktofp	6981170
RgX_gtofp_bit	7048039
abs_update	8020990
mydbllogr	9565405
homothetie2n	9979096
_gen_nored	11210046
eval_rel_pol	13168549
fft	14194026
_gen_one	14473453
ZX_to_ZiX	16490387
pol_to_gaussint	17627164
_mp_add	24664709
_mp_cmul	34779759
myshiftrc	35576923
homothetie_gauss	36566078
lower_bound	41030982
findpower	41031048
graeffe	49613299
mydbllog2r	57611086
mygprec	63864914
ZiX_sqr	99236641
myshiftic	136164686
mygprecrc	215569588
mydbllog2i	226910026
dbllog2	304092303

Generated by: LCOV version 1.16