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 30590-f14e077362) Lines: 1467 1530 95.9 % Date: 2026-01-01 09:21:12 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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15194
_sqrtnr	22586
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48552
realroots	50627
ZX_sturm_irred	116572
ZX_sturm_i	122967
split_pols	166674
polsolve	166678
splitcauchy	166690
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296169
_gen_zero	325924
fix_roots1	398353
split_1	467785
conformal_mapping	467787
split_0_1	468149
split_0_2	468149
logradius	493835
parameters	493841
split_2	493841
split_fromU	493841
update_radius	493841
optimize_split	493842
split_0	494203
refine_F	502227
dft	502230
all_roots	535876
clean_roots	535924
a_posteriori_errors	536978
fix_roots	536979
mygprec_special	536985
logpre_modulus	606544
logmodulus	606551
abs_update_r	778533
ind_maxlog2	902417
isexactscalar	931714
isreal	961625
initdft	996072
dual_modulus	1012180
usp	1125900
ZX_sturmpart	1128200
check_ab	1178827
tocomplex	1213169
isvalidcoeff	1228149
ZX_Uspensky	1313684
conformal_basecase	1403476
conformal_pol	1403596
fujiwara_bound_real	1406648
split_complete	1525380
homothetie	1609607
append_clone	1613499
logmin_modulus	1614344
root_error	1911614
mygprecrc_special	2178278
ZX_rescale2prim	2233498
cmp_complex_appr	2237241
fujiwara_bound	2270946
checkbound	2354784
refine_H	2459914
scalepol	4288157
mygprec_absolute	4337453
_mp_mul	4374391
logmax_modulus	4449449
bkeval_single_power	5234116
splitpoleval	5234228
newton_polygon	5505261
X2XP1	5989638
_mp_sqr	6297774
dblexp	6547202
quicktofp	6976614
RgX_gtofp_bit	7029063
abs_update	8003326
mydbllogr	9544305
homothetie2n	9954447
_gen_nored	11197209
eval_rel_pol	13134225
fft	14154912
_gen_one	14468909
ZX_to_ZiX	16448270
pol_to_gaussint	17583687
_mp_add	24658661
_mp_cmul	34756198
myshiftrc	35495510
homothetie_gauss	36487477
findpower	40944691
lower_bound	40945156
graeffe	49493190
mydbllog2r	56169713
mygprec	63740428
ZiX_sqr	99010401
myshiftic	135773560
mygprecrc	215118105
mydbllog2i	226369123
dbllog2	302022736

Generated by: LCOV version 1.16